NAME Frederick II von Hohenstaufen. He held numerous titles, including King of Sicily (as Frederick I), King of Germany, Holy Roman Emperor, and King of Jerusalem.
WHAT FAMOUS FOR Frederick II is one of the most compelling and controversial figures of the Middle Ages. He was known to his contemporaries as Stupor Mundi ("The Wonder of the World") for his immense cultural and intellectual curiosity, his political ambition, and his extraordinary talents. He was famous for his decades-long power struggle with the Papacy, his patronage of arts and sciences, his success in the Sixth Crusade where he took control of Jerusalem through diplomacy rather than bloodshed, and for authoring the Constitutions of Melfi, a groundbreaking legal code for his Kingdom of Sicily.
BIRTH Frederick II was born in Jesi, near Ancona, Italy, on December 26, 1194.His mother Constance was around 40 years old at the time of his birth—a notably advanced age for childbirth in the 12th century. Opponents of Frederick spread stories that he was not truly her son, but rather the child of a local commoner, such as a butcher or miller.
In response to these rumours, later chroniclers and legends claimed that Constance gave birth in a pavilion tent set up in the market square of Jesi, inviting local matrons to witness the birth to dispel any doubts about her maternity. Some versions add that she later returned to the square to breastfeed the infant publicly. However, historians agree that these stories emerged after the fact, in rebuttal to the persistent allegations about Frederick's parentage, and are not supported by contemporary records.
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The birth of Frederick II |
Constance did take unusual measures to affirm Frederick's legitimacy, such as swearing on the gospels before a papal legate.
FAMILY BACKGROUND Frederick was born into the House of Hohenstaufen and was the grandson of emperor Frederick I Barbarossa. His father was Emperor Henry VI, and his mother was Constance Hauteville, who was the daughter of Roger II of Sicily .
At birth, his mother, Constance, named him Constantine, a masculine form of her name to identify him closely with both his Norman heritage and his imperial heritage through Constantine the Great . He was only given his grandfathers' names, becoming Frederick Roger (or Roger Frederick), at his baptism when he was two years old.
CHILDHOOD Frederick's childhood was turbulent as he passed through the hands of a collection of self-serving, scheming regents while the Sicilian nobility grabbed much of the royal demesne and wealth. Some chroniclers report that the young king was so destitute that he had to seek shelter among the citizens of Palermo.
Upon Constance's death in 1198, Pope Innocent III succeeded as Frederick's guardian. Frederick's tutor during this period was Cencio, who would become Pope Honorius III. Markward of Annweiler, with the support of Henry's brother, Philip of Swabia, reclaimed the regency and soon after invaded the Kingdom of Sicily. Frederick was subsequently under tutor Walter of Palearia, until, in 1208, he was declared of age. Growing in Sicily was certainly a very important thing for Frederick, because he grew more Sicilian than German.
EDUCATION Frederick received a multifaceted and complete education, which did not only focus on legal and administrative issues, but which also touched on the arts and writing. By the time he was declared of age in 1208, he spoke five languages: Greek, Arabic, Latin, Provençal and Sicilian.
Frederick was an avid reader and passionately interested in nature and the study of the universe from his younger years. Some reports have him freely wandering the streets of cosmopolitan Palermo, talking and arguing with all manner of people, and always devouring knowledge. He was raised in a cultivated and multi-ethnical environment, which made him polyglot, used to multi-ethnicity, refined, educated and above all absolutist, as the Norman Kings.
CAREER RECORD
1198: Crowned King of Sicily.
1212: Travels to Germany and is elected King of the Germans by a faction of princes opposing Otto IV.
1215: Crowned King of the Germans at Aachen.
1220: Crowned Holy Roman Emperor in Rome by Pope Honorius III.
1225: Becomes King of Jerusalem through his marriage to Isabella II.
1228-1229: Leads the Sixth Crusade, successfully negotiating the handover of Jerusalem, Bethlehem, and Nazareth.
1231: Issues the Constitutions of Melfi (also known as Liber Augustalis), a comprehensive legal code that centralised power in his Kingdom of Sicily.
1227-1250: Engaged in a near-continuous political and military struggle with the Papacy (under Popes Gregory IX and Innocent IV) and the pro-papal Guelph communes of Northern Italy. He was excommunicated multiple times.
APPEARANCE Frederick was said to be "ruddy, with a bald head and shortsighted eyes," a description attributed to the Arab chronicler Sibt ibn al-Jawzi. He had the red-blonde hair of his Hohenstaufen ancestors.
Some sources, including contemporary rivals, described him as short. Otto IV, his political adversary, claimed that Frederick was extremely small, perhaps even a dwarf, and thus unfit to rule. While this may have been political slander, physical evidence suggests Frederick was indeed shorter than average, possibly around 1.66 meters (5 foot 4 inches), similar to his son Henry. (1)
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Frederick II and his falcon. From his book De arte venandi cum avibus ( |
FASHION Frederick often defied conventional European courtly dress. Influenced by his Sicilian upbringing, he frequently adopted the luxurious, flowing silk robes typical of Saracen or Byzantine rulers, a habit that further fueled rumours of his un-Christian tendencies among his enemies.
In 1221, Frederick decreed that Jews must be distinguished from Christians by their clothes and their appearance, thus conforming to the decisions of the Fourth Lateran Council (1215). The Jews of Sicily were ordered to wear blue coats over their clothes and grow beards, and the women to wear a blue stripe on their cloaks and head covering to distinguish them from the Christians . However, there is no evidence that these strictures were actually enforced. (2)
CHARACTER Frederick possessed a complex and formidable personality. He was intellectually brilliant, insatiably curious, pragmatic, and a gifted diplomat. He was also seen as autocratic, proud, and capable of extreme cruelty and vindictiveness towards his enemies. He was a rationalist and a skeptic who valued empirical evidence and observation, which set him apart from the more dogmatic worldview of his era.
SPEAKING VOICE Frederick was known for his remarkable linguistic abilities, speaking six languages: Latin, Sicilian, Middle High German, Old French, Greek, and Arabic . He was described as freely wandering the streets of cosmopolitan Palermo, talking and arguing with all manner of people .
SENSE OF HUMOUR Frederick was known for his sharp, intellectual, and often cynical wit. He enjoyed riddles and scholarly debates. One famous anecdote comes from his dealings with the papacy. When Pope Gregory IX excommunicated him and called him the "Antichrist," Frederick reportedly quipped that if the pope had truly believed this, he would have fled rather than simply excommunicate him. This sharp retort demonstrates Frederick's ability to use irony and logic to undermine his opponents' accusations, reflecting both his intellectual agility and his penchant for clever, biting humor.
RELATIONSHIPS Frederick II was married three times. His first wife was Constance of Aragon, a 25-year-old widow and daughter of the King of Aragon, whom he married at the age of 14 under the arrangement of his guardian, Pope Innocent III. Though young, the match proved politically useful—Constance arrived with a contingent of knights that helped Frederick secure control of Sicily. The couple appeared to have a reasonably content marriage, and Constance gave birth to a son, Henry.
Three years after Constance’s death, in 1225, Frederick married 16-year-old Yolande of Jerusalem (also known as Isabella II), daughter of King John of Brienne. The marriage was timed with Frederick’s plans for a crusade, and he quickly maneuvered to sideline his new father-in-law and assert control over the Kingdom of Jerusalem. Although Yolande died in 1228, shortly after giving birth to their son Conrad, Frederick claimed the title of King of Jerusalem and was crowned in 1229—despite the technicality that his wife, the kingdom’s actual heiress, had already passed away. Their son, Conrad IV, would later be elected King of the Germans in 1237.
In 1235, Frederick married for the third time—this time to 22-year-old Isabella of England, daughter of King John of England. The wedding was a grand affair at Worms Cathedral on July 15 or 20, 1235. The marriage brought prestige but little long-term impact; Isabella died six years later.
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Isabella of England, Holy Roman Empress |
Despite his imperial title, Frederick was far from ascetic. He maintained a travelling harem and an unconventional court, earning him a reputation that was, at times, more flamboyant than holy.
There is some evidence and legend, there was one woman he truly loved: Bianca Lancia. Bianca and Emperor Frederick are believed to have met around 1225 while he was travelling around Italy. Bianca is usually regarded as Frederick's favourite mistress According to chroniclers, Frederick and Bianca only married when she was dying.
Bianca was the mother of his favourite son, Manfred. He had numerous illegitimate children who often played key roles in his administration
MONEY AND FAME Frederick built upon the work of his Norman predecessors and forged an early absolutist state bound together by an efficient secular bureaucracy . He instituted measures designed to bring trade under state control and make the manufacture of certain products the monopoly of the state . He had enlarged the harbours of his kingdom and established a navy and a fleet of merchant vessels .
In 1231, he introduced the augustalis, a high-purity gold coin that was the first of its kind to be widely circulated in Europe since the fall of Rome. It served as both a powerful piece of imperial propaganda and a stable currency.
Frederick enjoyed a reputation as a brilliant Renaissance man and polymath . His reputation as a driven and energetic monarch spread, adding to his already semi-legendary status .
FOOD AND DRINK His court was known for its sophisticated dining, blending European traditions with the rich culinary influences of the Arab and Byzantine world present in Sicily. He was reportedly moderate in his habits, valuing quality and refinement over gluttony.
MUSIC AND ARTS Frederick was an avid patron of science and the arts. He played a major role in promoting literature through the Sicilian School of poetry . His magnificent Sicilian imperial-royal court in Palermo, beginning around 1220, was the cultural and intellectual hub of the early 13th century.
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The Court of Emperor Frederick II in Palermo by Arthur von Ramberg. Wikipedia |
Frederick hosted numerous artists in his court and was an attentive and generous patron.
He was also a prolific builder, commissioning castles, palaces, and hunting lodges in a unique style that blended Roman, Gothic, and Islamic architectural elements.
LITERATURE Frederick was a writer himself and contributed substantially to Italian literature through the establishment of the Sicilian School of Poetry. His circle included perhaps 30 men, most of them Sicilians, with added groups of Tuscans and southern Italians. The school and its poetry were saluted by Dante and his peers and predate by at least a century the use of the Tuscan idiom as the elite literary language of Italy. About 125 poems are extant from Frederick's poets, all in Sicilian dialect .
The invention of the sonnet is usually attributed to Giacomo da Lentini, one of Frederick's court poets . (3)
NATURE Frederick was passionately interested in nature and the study of the universe from his younger years . He was especially interested in astronomy, astrology, geography, zoology, medicine, and human anatomy.
In 1231, Frederick brought a menagerie of animals unknown to most Italians including elephants, dromedaries, camels, panthers, gerfalcons, lions, leopards, white falcons, and bearded owl .
Frederick II wrote De Arte Venandi cum Avibus ("On the Art of Hunting with Birds"), a comprehensive treatise on falconry and ornithology, in the 1240s. The work is celebrated for its scientific approach and detailed personal observations. It was the first treatise on falconry.
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An image from an old copy of De arte venandi cum avibus |
PETS Frederick loved exotic animals in general: his menagerie, with which he impressed the cities of Northern Italy and Europe, included elephants, dromedaries, camels, panthers, gerfalcons, lions, leopards, white falcons, and bearded owl .
There is no question that Emperor Frederick II valued gyrfalcons for use in falconry more highly than all other kinds of falcons.
HOBBIES AND SPORTS Falconry was Frederick's all-consuming passion, which he treated as both a sport and a science. He also enjoyed chess and intellectual debates with the scholars, philosophers, and mathematicians he gathered at his court.
SCIENCE AND MATHS Frederick was a great patron of science. He founded the University of Naples in 1224, the first state-funded public university, to train secular administrators for his kingdom. He corresponded with leading scholars across the Mediterranean, such as Leonardo Fibonacci, who introduced Arabic numerals to Europe. He encouraged public dissections and scientific experimentation.
Frederick enjoyed experimenting, though at times they were on the macabre side. They are most famously recorded by the 13th-century Franciscan chronicler Salimbene de Adam, who really did not like Frederick II and had a vested interest in portraying him as arrogant, heretical, and cruel. According to Salimbene:
Frederick allegedly sealed several prisoners in an airtight room and waited for them to die, hoping to see their souls escape at the moment of death when he opened the door. Unsurprisingly (and morbidly), no soul was seen, but the story underscores Frederick’s fascination with natural philosophy, even if this particular experiment was grotesquely misguided.
He supposedly gave two men identical meals, then sent one to bed and the other on a strenuous hunt. He later had them both killed and dissected to determine whose food was better digested. The experiment was, disturbingly, a crude inquiry into human physiology.
These accounts, especially the dissection tale, are often cited to highlight Frederick's “scientific curiosity,” albeit one unencumbered by modern ethics. However, historians caution that while Frederick was unusually curious for his time—deeply interested in medicine, astronomy, and the natural sciences—Salimbene’s bitter tone and Franciscan bias likely exaggerated or even invented some details to make him appear monstrous.
Frederick was interested in mathematics, astronomy and astrology. Piero della Vigna remarked that Frederick had friars forming maps into globes, tracking the sun's course through the zodiac, squaring circles, and converting triangles into quadrilaterals.
Frederick sent questions of astronomy and astrology to the sultans of the east, gaining two astronomers for his own court and a planetarium for his collection.
Frederick made the connection between hygiene and the spread of disease, which was unknown at the time .
PHILOSOPHY & THEOLOGY Frederick II presided over one of the most intellectually vibrant courts of the Middle Ages, where Christian, Jewish, and Muslim scholars mingled freely in a spirit of academic curiosity. A true polymath and maverick, Frederick was also a religious sceptic—boldly unorthodox in an age of rigid faith. He viewed organized religion with suspicion and is said to have dismissed Moses, Jesus, and Muhammad alike as deceivers of mankind. His penchant for blasphemy and irreverent jokes scandalized his contemporaries and infuriated the Church.
His rocky relationship with Rome was legendary: he was excommunicated not once but three times. In a particularly bold gesture, on March 18, 1229, while still under excommunication, Frederick crowned himself King of Jerusalem in the Church of the Holy Sepulchre. This dramatic act marked both the zenith of his power and a shift in how he viewed his role. Prophecies began to swirl around him; Frederick encouraged comparisons to Christ and referred to himself as a new David—a messianic ruler destined to reshape the world.
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Excommunication of Frederick by Pope Innocent IV |
His irreverence extended even to his coronation attire. When he was crowned emperor, Frederick wore a gleaming red robe embroidered not with Latin prayers but with Arabic script. The inscription dated the garment to the Islamic year 528 and offered a lavish Arabic blessing: “May the Emperor be received well, may he enjoy vast prosperity, great generosity and high splendour… May his days and nights go in pleasure without end or change.” It was a striking symbol of his cultural openness—and his tendency to thumb his nose at convention.
In 1231, at Melfi, Frederick issued a sweeping legal code for the Kingdom of Sicily, the most ambitious attempt at state-building in Europe since the Byzantine emperor Justinian. His “Constitutions of Melfi” were a landmark in medieval governance, foreshadowing Enlightenment ideals of centralized power and rational lawmaking centuries before they took hold.
REIGN Frederick II of Hohenstaufen was, by any measure, one of the most improbable and fascinating rulers Europe ever managed to produce—which, considering the competition, is saying something. He was a medieval emperor who read Arabic poetry, argued with popes like a grumpy divorcee, and ran his Sicilian kingdom with the brisk efficiency of a man organizing a particularly large filing cabinet. He was excommunicated multiple times (twice, spectacularly, by the same pope), spoke six languages, launched a crusade while technically banned from the Church, and ruled from a court so dazzlingly multicultural that it made Renaissance Florence look like a village book club.
Frederick’s rise began with a classic medieval plot twist. Orphaned and barely out of nappies, he was crowned King of Sicily in 1198, a position he initially ruled with all the power of a child with a plastic crown—his regents mostly squabbled while the kingdom fell into polite chaos. But once grown, Frederick took charge with terrifying competence. As King of Germany in 1212 and Holy Roman Emperor by 1220, he began methodically restoring order, writing legal codes with the enthusiasm of a man assembling a particularly complicated IKEA wardrobe.
His Assizes of Capua (1220) and Constitutions of Melfi (1231) weren’t just laws—they were bureaucratic symphonies. Feudal barons were reined in, royal lands clawed back, and nobles could no longer marry or die without asking permission first. He built fortresses across Sicily like a man playing Risk on a caffeine binge, ensuring that if anyone misbehaved, there was always a handy garrison nearby to drop in for a corrective chat.
Frederick’s imperial dreams didn’t stop at Sicily. He wanted all of Italy, and a good chunk of Germany too, which naturally upset everyone else who had plans for those places—especially the pope, who by this point was developing a full-blown case of Frederick-related hypertension. Frederick clashed repeatedly with the Lombard League (a sort of medieval NATO of northern Italian cities), winning the Battle of Cortenuova in 1237, but failing to finish the job, as the cities inconveniently refused to stay conquered.
Meanwhile, the papacy was becoming increasingly unamused by Frederick’s refusal to launch a Crusade when asked, especially after he promised several times and then ghosted like a bad Tinder date. on September 29, 1227, Pope Gregory IX finally lost patience and excommunicated him. Frederick responded in typical fashion—by going on a Crusade anyway. The Sixth Crusade (1228–1229) saw him march to the Holy Land, not to fight, but to negotiate. He returned Jerusalem to Christian hands without spilling a drop of blood—an achievement that delighted diplomats and infuriated the pope in equal measure.
While Frederick made a hobby of annoying pontiffs, he also found time to turn his court in Palermo into the intellectual equivalent of a Renaissance fair 200 years early. There were scholars from Baghdad, poets from Provence, and scientists who knew how to dissect birds in three languages. He founded the University of Naples in 1224—not just to educate, but to train bureaucrats who could enforce all his delightful new laws. Think Hogwarts, but for lawyers.
The Sicilian School of poetry thrived under his patronage, producing verse that helped shape the modern Italian language. He read Arabic, translated Aristotle, and treated Muslims and Jews not as enemies but as people who might throw a really good dinner party. His tolerance was radical for its time—so much so that it made his Christian contemporaries deeply suspicious.
But not everything in Frederick’s world was wise verses and administrative nirvana. His final years were dominated by rebellions, betrayals, and endless squabbles with various popes, who seemed to regard him as equal parts heretic and houseguest who overstayed his welcome. His own son, Henry VII, revolted against him (a distinctly ungrateful move), and his Italian campaigns went sideways after the catastrophic Battle of Parma in 1248.
By the time Frederick died in 1250—possibly still grumbling about popes—the empire he had spent a lifetime shaping was already beginning to crack. The Hohenstaufen dynasty didn’t so much fall as quietly deflate, and the Holy Roman Empire descended into a century-long period of squabbling, disunity, and papal gloating.
Still, for one glittering moment, Frederick II made the medieval world look surprisingly modern. Or at least, impressively well-organized.
POLITICS Frederick’s political aim was to create a modern, centralised, and absolute monarchy, administered by a professional secular bureaucracy. The Constitutions of Melfi in Sicily were the cornerstone of this vision. His overarching imperial policy was focused on securing his hereditary lands in Sicily and asserting his imperial authority over the rebellious city-states of Northern Italy (the Lombard League) and the Papacy, which he saw as a rival temporal power.
SCANDAL Frederick's reign was rife with scandal, much of it amplified by papal propaganda. He was excommunicated three times. He was accused of blasphemy, heresy, and keeping a harem of Saracen women at his court in Lucera. The most notorious rumour concerned a language deprivation experiment, where he allegedly had infants raised in silence to discover what language they would naturally speak. The chronicler Salimbene di Adam claimed all the infants died, though the historicity of this event is highly debated.
MILITARY RECORD Frederick II’s military career was as unconventional as the man himself. His rise began with the pivotal Battle of Bouvines in 1214, where French king Philip II, allied with Frederick, defeated the reigning Holy Roman Emperor Otto IV. This decisive victory cleared the way for Frederick's eventual succession to the imperial throne.
By 1220, after vanquishing a rival claimant, Frederick was formally crowned Holy Roman Emperor. Unlike many of his contemporaries, he preferred diplomacy over brute force—especially in his dealings with the Muslim world.
Nowhere was this more evident than during the Sixth Crusade (1228–1229). Although he had promised to join a crusade as early as 1215, Frederick delayed for over a decade. When he finally set sail, he confounded expectations: instead of waging holy war, he negotiated directly with Sultan al-Kamil of Egypt. The result was a remarkable treaty that peacefully returned Jerusalem, Bethlehem, and Nazareth to Christian control—without a single battle. It was Frederick’s charisma and diplomatic finesse, not swords, that reclaimed the holy sites.
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Frederick II (left) meets Al-Kamil (right). Nuova Cronica, c. 1348 |
The Pope, expecting a show of Christian military might, was furious. So much so that he called for a crusade against Frederick himself. The call, however, fell flat.
Beyond the Crusades, Frederick was frequently entangled in military struggles closer to home. He fought persistent wars to retain control over the Kingdom of Sicily, and waged a long campaign against the Lombard League, a coalition of defiant northern Italian cities. Complicating matters further, he faced internal rebellions—most notably from his own son, Henry VII, and various German princes who grew restless during his extended absences from Germany.
In all, Frederick’s military legacy was marked less by battlefield glory and more by political maneuvering, sharp strategy, and the sheer force of his formidable personality.
HEALTH AND PHYSICAL FITNESS Frederick was notably ahead of his time in promoting hygiene—especially for his armies and during medical procedures. His insistence on a Sunday bath was outright scandalous for the time, showing his interest in hygiene and disease prevention . Frederick also paid careful attention to his own hygiene in terms of bloodletting. (4)
Frederick II was ill for some months before his death . Early in December 1250 a fierce attack of dysentery confined him to his hunting lodge of Castel Fiorentino in the south of Italy.
HOMES Frederick is most famous for the numerous castles and hunting lodges he constructed throughout Apulia and Sicily. In 1229, on his return from the Crusade, the Emperor initiated his vast program of defensive architecture, creating in eastern Sicily the most homogeneous group of "castri regia." The castles of Augusta, Syracuse and Milazzo were quickly built, together with the Castello Ursino in Catania. The castles of Enna, Terranova (Gela) and Scaletta Zanclea rose in central and western Sicily. His castles had bounteous gardens full of pools and singing birds
The most iconic is the mysterious, perfectly octagonal Castel del Monte, a UNESCO World Heritage site, which stands as a masterpiece of medieval architecture.(5)
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Castel Del Monte by ParisTaras Wikipedia |
His magnificent Sicilian imperial-royal court in Palermo, beginning around 1220, was the cultural and intellectual hub of the early 13th century .
TRAVEL Unlike most Holy Roman emperors, Frederick spent little of his life in Germany. After his coronation in 1220, he remained either in the Kingdom of Sicily or on Crusade until 1236, when he made his last journey to Germany. (At this time, the Kingdom of Sicily, with its capital at Palermo, extended onto the Italian mainland to include most of southern Italy.) He returned to Italy in 1237 and stayed there for the remaining 13 years of his life, represented in Germany by his son Conrad.
DEATH Frederick II died on December 13, 1250, at Castel Fiorentino, Apulia, Kingdom of Sicily, aged 55, after suffering from a persistent attack of dysentery. In his final months, Frederick had withdrawn from active campaigning due to illness and spent much of his time in southern Italy. According to reports, he died peacefully, reportedly wearing the habit of a Cistercian monk. His death was sudden and shocked much of Europe, as he remained a towering figure until the end.
Frederick II was interred in the Cathedral of Palermo, Sicily. His tomb is a marble sarcophagus, and he rests alongside his parents, Henry VI and Constance, as well as his grandfather, Roger II of Sicily. The sarcophagus is made of red porphyry, a material reserved for imperial burials, emphasizing his status. When the tomb was opened in the 19th and 20th centuries for scientific study, Frederick’s body was found wrapped in red cloth, with a sword at his side.
Frederick’s death marked the end of the Hohenstaufen dynasty’s power in Europe, and his passing was met with both mourning and relief, depending on political allegiance. Legends later arose that Frederick was not truly dead but sleeping, awaiting a return to restore his empire—a myth that was eventually transferred to his grandfather, Frederick Barbarossa.
APPEARANCES IN MEDIA Frederick II has been the subject of modern media productions, including the 2019 German television documentary Friedrich II. - Der Staufer: Der ewige Kampf mit dem Papst (Frederick II - The Hohenstaufen: The Eternal Struggle with the Pope). The documentary portrays him as a patron of science, a reformer, and possibly the first modern ruler.
Frederick II has been the subject of numerous biographies. He appears in historical novels, such as Stupor Mundi by G. L. Baker.
He is a playable leader in the Civilization video game series, reflecting his enduring legacy as a ruler of science and culture.
ACHIEVEMENTS Political: Created one of the first centralised, absolutist states in Europe through the Constitutions of Melfi (1231).
Diplomatic: Regained Jerusalem for Christendom through peaceful negotiation during the Sixth Crusade, a unique achievement.
Economic: Introduced the augustalis, a stable and high-quality gold currency that boosted the economy of his kingdom.
Cultural: His court fostered the Sicilian School of poetry, giving birth to the Italian literary language.
Educational: Founded the University of Naples (1224) as a secular institution of higher learning.
Scientific: Authored De Arte Venandi cum Avibus, a seminal work of observational science and ornithology, and was a major patron of science and mathematics.
Sources (1) History of the Germans Podcast (2) Encyclopedia.com (3) Encyclopedia Britannica (4) The Write-ly World of Andrea Cefalo (5) Travell Italy