Nielsen Hayden genealogy
(Unknown daughter of Gwion Sais)
Generation: 1
Generation: 3
Generation: 4
1. (Unknown daughter of Gwion Sais) (daughter of Gwion Sais ap Heilin ap Llywarch ap Gwyn). Family/Spouse: Owain ap Gruffudd ab Yr Arglwydd Rhys. Owain (son of Gruffudd ab Yr Arglwydd Rhys and Matilda de Briouze) died on 18 Jan 1236 in Strata Florida Abbey, Ceredigion, Wales; was buried in Strata Florida Abbey, Ceredigion, Wales. [Group Sheet] [Family Chart]
Children:- Maredudd ab Owain ap Gruffudd ab Yr Arglwydd Rhys died in Mar 1265 in Llanbardarn Fawr, Ceredigion, Wales; was buried in Strata Florida Abbey, Ceredigion, Wales.
2. Gwion Sais ap Heilin ap Llywarch ap Gwyn was born about 1170 (son of Heilin ap Llywarch ap Gwyn ap Tewdwr Mawr). Children:
Generation: 3
4. Heilin ap Llywarch ap Gwyn ap Tewdwr Mawr was born about 1100 (son of Llywarch ap Gwyn ap Tewdwr Mawr ap Cadell). Children:
- 2. Gwion Sais ap Heilin ap Llywarch ap Gwyn was born about 1170.
Generation: 4
8. Llywarch ap Gwyn ap Tewdwr Mawr ap Cadell was born about 1070 (son of Gwyn ap Tewdwr Mawr ap Cadell). Children:
- 4. Heilin ap Llywarch ap Gwyn ap Tewdwr Mawr was born about 1100.