Llewelyn Ap Seisyll

Llewelyn Ap was born in 0980 in Rhuddlan, Flint, Wales.  Llewelyn Ap's father was Seisyll Ap Ednnywain and his mother was Prawst Verch Elsie.  His maternal grandfather was Elsie Ap Anarawd.  He was an only child.  He died at the age of 41 in 1021.

They had a son named Gruffydd LLewellyn King of.