March 22 1282, Dafydd ap Gruffudd attacked Hawarden Castle, an attack which started the final conflict with Plantagenet-ruled England, in the course of which Welsh independence was lost.
Here’s what we know (as they say in the newspapers)
In 1255, Llywelyn ap Gruffydd defeated his brothers Owain (d.1282) and Dafydd (d.1283), in battle at Bryn Derwin. Owain was imprisoned, and Llywelyn set about reasserting the authority of Gwynedd and thereafter extending it into a supremacy… (View original article)