Pr. Cadwallon ap Einion of N Wales
He died in 0517.

 Meddyf verch Maeldaf
Meddyf verch Maeldaf was born about 0452.

 King Maelgwn I ap Cadwallon of Gwynedd (The tall)
Maelgwn I ap Cadwallon of Gwynedd, known as The tall, was born about 0480.  He died in 0547.