# William X, Duke of Aquitaine

> Carolingian Duke

**Wikidata**: [Q453121](https://www.wikidata.org/wiki/Q453121)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/William_X,_Duke_of_Aquitaine)  
**Source**: https://4ort.xyz/entity/william-x-duke-of-aquitaine

## Summary
William X, Duke of Aquitaine, was a Carolingian nobleman who ruled as Duke of Aquitaine from his birth in 1099 until his death in 1137. As a hereditary aristocrat, he held significant regional power during the early 12th century, though specific details of his governance remain limited to his documented titles and lifespan.

## Biography
- **Born**: January 1, 1099  
- **Nationality**: [Not explicitly stated in source material]  
- **Known for**: Serving as a Carolingian Duke of Aquitaine  
- **Field(s)**: Nobility and governance  

## Contributions
William X’s primary contribution was his hereditary role as Duke of Aquitaine, maintaining the title from 1099 to 1137. His reign is documented through historical records, though no specific policies, military actions, or cultural patronage are detailed in the provided source material. His legacy is preserved through identification in international authority files and academic catalogs.

## FAQs
**Q: When did William X, Duke of Aquitaine, live?**  
A: He was born on January 1, 1099, and died on April 9, 1137.  

**Q: What titles did William X hold?**  
A: He is primarily recognized as a Carolingian Duke, specifically governing the region of Aquitaine.  

**Q: Why is William X documented in multiple databases?**  
A: His historical presence is verified through entries in VIAF, ISNI, GND, and other international authority files, reflecting his significance in medieval European nobility.  

## Why They Matter
William X’s significance lies in his role as a hereditary ruler during a transitional period in medieval European history. As a Carolingian Duke, he represented a legacy of nobility tied to the Carolingian dynasty, though the extent of his direct influence remains unclear due to limited source material. His documentation across 33 Wikimedia sites and numerous academic databases underscores his recognized place in historical records, ensuring his identification as a notable figure of the early 12th century.

## Notable For
- Carolingian Duke of Aquitaine (1099–1137).  
- Documented in 33 Wikimedia site links.  
- Referenced in international authority files including VIAF (ID 81539292), ISNI (0000000057766120), and GND (137334508).  
- Identified in specialized catalogs such as the Gran Enciclopèdia Catalana (ID 139296) and the Library of Congress (authority ID 11766).  

## Body

### Early Life and Reign
William X was born on January 1, 1099, into a lineage of Carolingian nobility. He inherited the title of Duke of Aquitaine at birth, a position he held until his death on April 9, 1137. The duchy of Aquitaine, a historically significant region in southwestern France, was governed by hereditary rulers like William X during the High Middle Ages.  

### Historical Context
As a Carolingian Duke, William X belonged to a dynasty that shaped medieval European politics. The Carolingian Empire, though fragmented by the 12th century, retained influence through regional titles like the Duchy of Aquitaine. William X’s reign occurred during a period of shifting power dynamics, though specific details of his rule—such as alliances, conflicts, or administrative actions—are not elaborated in the provided source material.  

### Legacy and Documentation
William X’s historical presence is verified through extensive documentation in international authority files and academic catalogs. Key identifiers include:  
- **VIAF**: 81539292  
- **ISNI**: 0000000057766120  
- **GND**: 137334508  
- **Library of Congress Authority ID**: 11766  
- **Gran Enciclopèdia Catalana ID**: 139296  
- **BNF Paris Basin ID**: 6000000003523986134  

These entries confirm his recognition across scholarly and cultural institutions. Additionally, his life is referenced in specialized databases such as MedLirbis (ID p10251.htm#i102510), SUDOC (ID 1760126), and the Union Catalog of Artist Names (ID 136595).  

### Identification and Cataloging
William X’s biographical data is cataloged under multiple formats:  
- **Wikidata Label**: William X, Duke of Aquitaine (Q...)  
- **Wikipedia Title**: William X, Duke of Aquitaine  
- **Freebase ID**: /m/02njjk  
- **ProCite ID**: sw.212760  
- **J9.1 ID**: 487490115  
- **BPL ID**: 7486, 7487  

This comprehensive documentation ensures his placement within historical scholarship, despite the brevity of detailed narratives about his life.  

### Genealogical and Institutional Recognition
William X is further identified through genealogical and institutional records:  
- **LIRIAS ID**: I00020884  
- **SELIBR ID**: I2593  
- **RKDartists ID**: Aquitaine-179  
- **SBN Author ID**: Guglièlmo+X  
- **BabelNet ID**: p=guillaume;n=de guyenne;oc=10  

These identifiers highlight his integration into broader historical and cultural frameworks, solidifying his role as a documented noble figure of the medieval period.

## References

1. [general catalog of BnF](https://catalogue.bnf.fr/ark:/12148/cb16938162x)
2. Integrated Authority File
3. Source
4. general catalog of BnF
5. Virtual International Authority File
6. Encyclopædia Britannica Online
7. The Peerage
8. Genealogics
9. Sapere Encyclopedia
10. Freebase Data Dumps. 2013
11. Sejm-Wielki.pl