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Llywelyn ap Gruffudd

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Llywelyn ap Gruffudd was a famous leader in Wales. He is often called Llywelyn the Last. He was the Prince of Gwynedd, a land in North Wales.

Gwynedd 1247 Map
Gwynedd 1247 Map

Llywelyn wanted to bring many Welsh lands together under his rule. He grew up during a time of great change. His family had deep roots in the land. His father was Gruffudd ap Llywelyn. His grandfather was the famous Llywelyn ab Iorwerth. Llywelyn had to work hard to find his place in this world.

Llywelyn became the sole ruler of his lands through many steps. First, he had to fight his own brothers, Owain and Dafydd. This happened in June 1255 at the Battle of Bryn Derwin. Llywelyn won that fight and became the leader of Gwynedd Uwch Conwy.

Gwynedd 1277 Map
Gwynedd 1277 Map

After that, he began to win more land. He led his army across the River Conwy in 1256. He also fought in the Battle of Cadfan in 1257. These victories helped him grow his power across Wales.

Llywelyn's power reached its highest point in the year 1267. This happened because of the Treaty of Montgomery.

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

King Henry III of England recognized Llywelyn as the Prince of Wales. This was a very big deal for the Welsh people. Llywelyn even made an alliance with Simon de Montfort. He offered 25,000 marks to help keep the peace. This treaty made him the most important leader in Wales.

However, life became very difficult after King Henry III died. A new king named Edward I took the throne in England. Edward and Llywelyn did not get along at all. Llywelyn struggled to pay the money promised in the treaty. He also faced a plot against his life in 1274. His own brother, Dafydd, was part of a plan to kill him. A heavy snowstorm actually stopped the attack from happening that day.

In the end, the struggle for Wales changed forever. King Edward I declared Llywelyn a rebel in 1276. The Treaty of Aberconwy took much of Llywelyn's land away.

Gwynedd 1277 Map
Gwynedd 1277 Map

Llywelyn remained the Prince of Wales in name only. He was eventually killed at Cilmeri in 1282.

Cilmeri 19 Tachwedd 2025
Cilmeri 19 Tachwedd 2025

This event was one of the final parts of the English conquest of Wales. Today, people still remember his story and his long fight.

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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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