Accession
On the death of Bleddyn ap Cynfyn in 1075, it appears that none of his sons were old enough to claim the throne, and Bleddyn's cousin Trahaearn ap Caradog, seized power. The family is thought to have originated in Arwystli, on the border between Gwynedd and Powys.
Read more about this topic: Trahaearn Ap Caradog