Llywelyn the Last was the final sovereign Prince of Wales, ruling from 1258 until his death in 1282. He was a member of the House of Gwynedd and sought to unite the Welsh principalities against English domination. His leadership was marked by both military successes and challenges, as he fought to maintain Welsh independence. Llywelyn's reign ended when he was defeated by the forces of King Edward I of England. Following his death, Wales was fully incorporated into the English crown, marking a significant turning point in Welsh history. His legacy remains a symbol of Welsh nationalism and resistance.