Dafydd ap Llywelyn, who had lately claimed the title of prince of Wales, dies and the resistance of the Welsh against English forces in Wales collapses.
1247
April - Treaty of Woodstock: Dafydd ap Llywelyn's successors, the Welsh princes Llywelyn ap Gruffudd and Owain ap Gruffudd acknowledge Henry as their overlord.
13 June - Coinage reform introduces a new silver coin and establishes seventeen local mints.