Grufudd ab Ednyfed Fychan

Gruffudd ab Ednyfed Fychan was to Llywelyn ap Gruffudd, king of Gwynedd. After his father Ednyfed Fychan and Dafydd ap Llywelyn died in 1246, he became the in the lands apportioned to Llywelyn ap Gruffudd after the Treaty of Woodstock in 1247. Traditionally, he was thought to have been forced to flee to Ireland sometime in the principate of Llywelyn ab Iorwerth as a result of some slander concerning Llywelyn's wife, Princess Joan. He headed a group of envoys sent by Llywelyn to entreat Henry III in 1256, and presumably died shortly thereafter.