King of Gwynedd and of Deheubarth Llywelyn Ap Seisyll
- 1023
Generation: 1
1. King of Gwynedd and of Deheubarth Llywelyn Ap Seisyll (son of Seisyll); died 1023. Llywelyn — Angharad. [Group Sheet]
Children:- Gruffydd Ap Llywelyn was born Abt 1007; died 5 Aug 1063.
2. Seisyll Children:
- 1. Llywelyn Ap Seisyll died 1023.