Helen
Generation: 1
Generation: 3
Generation: 4
1. Helen (daughter of Llywelyn Ap Iorwerth and (Unknown)). — I Domhnall. [Group Sheet]
Children:- Isabella of Mar was born 1227; died Bef 1302, Scotland.
2. Llywelyn Ap Iorwerth was born 1173, Dolwyddelan, Caernarvonshire, Wales (son of Iorwerth Drwyndwn); died 11 Apr 1240, Cistercian, Wales; was buried , Aberconwy, Wales. Llywelyn — (Unknown). [Group Sheet]
3. (Unknown) Children:
- 1. Helen
Generation: 3
4. Iorwerth Drwyndwn (son of Owain Gwynedd). Children:
- 2. Llywelyn Ap Iorwerth was born 1173, Dolwyddelan, Caernarvonshire, Wales; died 11 Apr 1240, Cistercian, Wales; was buried , Aberconwy, Wales.
- Dafydd Ap Iorwerth
Generation: 4
8. Owain Gwynedd (son of Gruffydd Ap Cynan). Children:
