# Llywelyn ab Iorwerth

> Prince of Gwynedd from 1199 to 1240

**Wikidata**: [Q467685](https://www.wikidata.org/wiki/Q467685)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Llywelyn_ab_Iorwerth)  
**Source**: https://4ort.xyz/entity/llywelyn-ab-iorwerth

## Summary

Llywelyn ab Iorwerth was born on January 1, 1173, in Dolwyddelan.[1][2] His citizenship was Wales. His father was Iorwerth Drwyndwn.

## Summary
Llywelyn ab Iorwerth, also known as Llywelyn the Great, was the Prince of Gwynedd and de facto Prince of Wales, ruling during a pivotal period in Welsh history. He is celebrated for his military leadership, cultural patronage, and efforts to preserve Welsh independence against English expansion.

## Biography
- Born: 1173 (approximate)
- Nationality: Welsh
- Education: Unknown (no records in source material)
- Known for: Leading Welsh resistance against English conquest and promoting Welsh cultural identity
- Employer(s): None (ruled independently as Prince of Gwynedd)
- Field(s): Political leadership, military strategy, cultural preservation

## Contributions
Llywelyn ab Iorwerth is known for his military campaigns, including the Battle of Crug Mawr (1203) and the Battle of Bryn Derwin (1216), which expanded his control over Gwynedd. He also established Dolwyddelan Castle, a key stronghold in northern Wales. His reign saw efforts to maintain Welsh independence through diplomacy and warfare, though his eventual defeat by King John of England marked a turning point in Welsh history.

## FAQs
**What was Llywelyn ab Iorwerth's role in Welsh history?**
Llywelyn ab Iorwerth was the Prince of Gwynedd and a central figure in the struggle for Welsh independence. His military victories and diplomatic efforts shaped the resistance against English conquest, though his eventual defeat by King John of England led to significant territorial losses for Wales.

**Where did Llywelyn ab Iorwerth establish key strongholds?**
Llywelyn ab Iorwerth built and fortified Dolwyddelan Castle in Conwy County Borough, Wales, which became a crucial military and political center during his reign.

**How did Llywelyn ab Iorwerth's reign impact Welsh culture?**
Llywelyn ab Iorwerth promoted Welsh cultural identity through patronage of literature and arts, though his efforts were ultimately overshadowed by the political realities of his time, including the loss of independence to England.

## Why They Matter
Llywelyn ab Iorwerth's legacy lies in his role as a symbol of Welsh resistance against English domination. His military campaigns and cultural patronage influenced later generations of Welsh leaders, and his eventual defeat by King John of England marked a significant turning point in Welsh history. His efforts to preserve Welsh identity, despite ultimate failure, remain a defining chapter in the struggle for national sovereignty.

## Notable For
- Leading the Welsh resistance against English conquest through military campaigns and diplomacy
- Establishing Dolwyddelan Castle as a key stronghold in northern Wales
- Promoting Welsh cultural identity through patronage of literature and arts
- Serving as a de facto Prince of Wales, reinforcing Welsh political autonomy

## Body

### Early Life and Rise to Power
Llywelyn ab Iorwerth was born in approximately 1173, ascending to the throne of Gwynedd following the death of his father, Iorwerth ab Owain. His early reign was marked by consolidation of power, including the construction of Dolwyddelan Castle, which became a symbol of Welsh resistance.

### Military Leadership and Campaigns
Llywelyn ab Iorwerth's military prowess is evident in his victories at the Battle of Crug Mawr (1203) and the Battle of Bryn Derwin (1216), which expanded his control over Gwynedd. These campaigns demonstrated his ability to challenge English dominance, though his eventual defeat by King John of England in 1216 marked a significant setback for Welsh independence.

### Cultural Patronage and Legacy
Despite political challenges, Llywelyn ab Iorwerth promoted Welsh culture through patronage of literature and arts. His reign saw efforts to preserve Welsh identity, though these were ultimately overshadowed by the political realities of his time. His legacy endures as a symbol of Welsh resilience and cultural pride.

### Political Impact and Defeat
Llywelyn ab Iorwerth's defeat by King John of England in 1216 led to significant territorial losses for Wales, marking a turning point in the struggle for independence. His reign, though ultimately unsuccessful, remains a defining chapter in Welsh history, influencing later generations of leaders and preserving the memory of Welsh resistance.

## References

1. [National Library of Wales archives and manuscripts catalogue](https://archives.library.wales/index.php/llewelyn-ap-iorwerth-d-1240-poetry)
2. The Peerage
3. Genealogics
4. Gran Enciclopèdia Catalana
5. Freebase Data Dumps. 2013
6. CERL Thesaurus