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Llywelyn ap Gruffudd

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Llywelyn ap Gruffudd was a leader in Wales.

Wales after the Treaty of Montgomery 1267 Colorblind
Wales after the Treaty of Montgomery 1267 Colorblind

He was the Prince of Gwynedd. He wanted to rule much of Wales. In 1255, he fought his own brothers. He won and became the sole ruler. Llywelyn then worked to grow his power. He fought many battles to gain new lands.

Gwynedd 1277 Map
Gwynedd 1277 Map

He made a deal with King Henry III. This was the Treaty of Montgomery in 1267. The King called Llywelyn the Prince of Wales. This was the highest point of his rule. But things began to change. A new King named Edward I took over England. Edward and Llywelyn did not get along. They fought over land and power. Llywelyn even tried to marry Eleanor de Montfort. But King Edward stopped the marriage. In 1277, a treaty took much land from Llywelyn.

Gwynedd 1277 Map
Gwynedd 1277 Map

He remained Prince in name only. In 1282, Llywelyn was killed at Cilmeri. This was part of the English conquest of Wales.

Cilmeri 19 Tachwedd 2025
Cilmeri 19 Tachwedd 2025

People still remember him today.

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🖼️ Images & Media (6)
File:Gwynedd 1247 Map.jpg
Gwynedd 1247 Map.jpg
File:Wales after the Treaty of Montgomery 1267 Colorblind.svg
Wales after the Treaty of Montgomery 1267...
File:Gwynedd 1277 Map.jpg
Gwynedd 1277 Map.jpg
File:Alexander III,Llywelyn ab Gruffydd with Edward I.jpg
Alexander III,Llywelyn ab Gruffydd with...
File:Leulinus decapitatus est.jpg
Leulinus decapitatus est.jpg
File:Cilmeri 19 Tachwedd 2025.jpg
Cilmeri 19 Tachwedd 2025.jpg
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