# Frederick II, Holy Roman Emperor

> King of Sicily, Holy Roman Emperor (1194–1250, 1220–1250)

**Wikidata**: [Q130221](https://www.wikidata.org/wiki/Q130221)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Frederick_II,_Holy_Roman_Emperor)  
**Source**: https://4ort.xyz/entity/frederick-ii-holy-roman-emperor

## Summary
Frederick II, Holy Roman Emperor (1194–1250), also known as "stupor mundi," served as the King of Sicily and the Holy Roman Emperor from 1220 to 1250. A multifaceted leader recognized as a writer, poet, and sovereign, he founded the University of Naples in 1224 and commissioned significant architectural works, including Castel del Monte and the Castle of Trani.

## Biography
- **Born:** December 26, 1194 (or January 2, 1195)
- **Nationality:** Holy Roman Empire, Kingdom of Sicily
- **Known for:** Reign as Holy Roman Emperor and King of Sicily; involvement in the Sixth Crusade; founding the University of Naples; constructing medieval castles.
- **Employer(s):** Holy Roman Empire, Kingdom of Sicily
- **Field(s):** Politics, Literature, Poetry

## Contributions
- **University of Naples:** Founded the University of Naples Federico II in June 1224, establishing a major center of learning in Italy.
- **Architectural Projects:** Commissioned the construction of the Castle of Trani (inception 1233), Castello dell'Imperatore in Prato (inception 1240), and Castel del Monte in Andria (inception January 29, 1240).
- **Military Campaigns:** Participated in the Sixth Crusade, a 13th-century military raid against Muslim Turks.
- **Cultural Artifacts:** Possessed the Cremona elephant, a gift received from al-Malik al-Kamil in 1228.

## FAQs
**When did Frederick II live and rule?**
Frederick II was born on December 26, 1194 (or January 2, 1195) and died on December 13, 1250. He ruled as King of Sicily from 1194 and as Holy Roman Emperor from 1220 until his death.

**What educational institution is attributed to Frederick II?**
He founded the University of Naples in June 1224, which is now known as the University of Naples Federico II.

**What castles were built during Frederick II's reign?**
Several notable structures were commissioned during his rule, including the Castle of Barletta, the Castle of Trani (1233), Castello dell'Imperatore (1240), and Castel del Monte (1240).

**What was Frederick II's role in the Sixth Crusade?**
He was a key figure in the Sixth Crusade, which was a 13th-century military raid against Muslim Turks.

**What is the meaning of "stupor mundi"?**
"Stupor mundi" is an epithet associated with Frederick II, translating to "wonder of the world," reflecting his significant impact as a sovereign and cultural figure.

## Why They Matter
Frederick II played a pivotal role in the history of the Holy Roman Empire and the Kingdom of Sicily, bridging the gap between Eastern and Western cultures during the 13th century. His founding of the University of Naples introduced a new model of higher education that moved away from purely religious institutions. Architecturally, the castles he commissioned, such as Castel del Monte, remain iconic examples of medieval fortification and design. His reign, characterized by complex political maneuvering and cultural patronage, left a lasting legacy on the political and intellectual landscape of Central and Southern Europe.

## Notable For
- Epithet "stupor mundi" (wonder of the world).
- Founding the University of Naples Federico II in 1224.
- Receiving the Cremona elephant as a diplomatic gift from al-Malik al-Kamil in 1228.
- Constructing Castel del Monte (inception 1240-01-29).
- Constructing Castello dell'Imperatore (inception 1240).
- Constructing the Castle of Trani (inception 1233).
- Occupations: Monarch, writer, poet, sovereign.
- Aliases: Federico II, Friedrich II von Hohenstaufen, Frederick of Hohenstaufen.

## Body

### Identity and Reign
Frederick II, also referred to as Federico II, Friedrich II von Hohenstaufen, or Frederick of Hohenstaufen, was a prominent member of the Hohenstaufen dynasty. He held the titles of King of Sicily and Holy Roman Emperor, ruling the latter from 1220 until his death in 1250. As a sovereign, he governed the Holy Roman Empire, a multi-ethnic complex of territories in Western and Central Europe that was formally established in 962 and functionally ended in 1806. His reign occurred during a period when the empire was a loose confederation of semi-autonomous states, characterized by a decentralized political structure and significant influence from the Catholic Church.

### Rule of the Kingdom of Sicily
In addition to his imperial title, Frederick II ruled the Kingdom of Sicily, a former state in southern Italy that existed from 1130 to 1816. His governance of this region was marked by extensive architectural and cultural development. The Kingdom of Sicily served as a stable power base for his imperial ambitions, allowing him to exert influence over the Mediterranean region.

### The Sixth Crusade
Frederick II was a central figure in the Sixth Crusade, a 13th-century military raid against Muslim Turks. His involvement in this conflict highlights his active engagement in the geopolitical and religious struggles of the era. The crusade was one of the major military conflicts involving the Holy Roman Empire during his tenure.

### Architectural Legacy
Frederick II commissioned the construction of numerous castles and fortifications throughout his Italian territories. These projects included:
*   **Castle of Barletta:** A castle located in Barletta, Italy.
*   **Castle of Trani:** A building in Trani, Italy, with an inception date of 1233.
*   **Castello dell'Imperatore:** A medieval castle in Prato, Italy, with an inception date of 1240.
*   **Castel del Monte:** A medieval castle in Andria, Apulia, Italy, with an inception date of January 29, 1240.

These structures are noted for their strategic locations and architectural significance, serving as symbols of his authority and administrative reach.

### Intellectual and Cultural Contributions
Beyond his military and political endeavors, Frederick II was a writer and poet. He fostered a culture of learning and intellectual inquiry, most notably through the founding of the University of Naples in June 1224. This institution, now known as the University of Naples Federico II, stands as a testament to his commitment to education and the dissemination of knowledge. His court was a center of cultural exchange, where he interacted with various scholars and intellectuals.

### Notable Possessions and Relations
Frederick II's reign included unique diplomatic exchanges, such as the receipt of the Cremona elephant. This elephant was given to him by al-Malik al-Kamil in 1228, symbolizing the complex diplomatic relations between the Christian West and the Muslim world during his rule.

### Death and Historical Recognition
Frederick II died on December 13, 1250. His life and legacy are documented in numerous historical records, and he is recognized by various identifiers in library and archival systems worldwide. His influence persists in modern times, evidenced by entities named after him, such as the Federico II power station in Italy and the University of Naples Federico II. He is often remembered by the epithet "stupor mundi," reflecting the profound impact he had on his contemporaries and subsequent historical narratives.

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