Nielsen Hayden genealogy
Gwion Sais ap Heilin ap Llywarch ap Gwyn
![Male](img/tng_male.gif)
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- 1 Gwion Sais ap Heilin ap Llywarch ap Gwyn [1] b. Abt 1170
- 2 (Unknown daughter of Gwion Sais) [1.1]
Owain ap Gruffudd ab Yr Arglwydd Rhys d. 18 Jan 1236
- 3 Maredudd ab Owain ap Gruffudd ab Yr Arglwydd Rhys [1.1.1]
d. Mar 1265
(Unknown daughter of Thomas ap Rhodri)
- 4 Owain ap Maredudd ab Owain ap Gruffudd [1.1.1.1]
d. 15 Aug 1275 [ =>]
- 4 Owain ap Maredudd ab Owain ap Gruffudd [1.1.1.1]
- 3 Maredudd ab Owain ap Gruffudd ab Yr Arglwydd Rhys [1.1.1]
- 2 (Unknown daughter of Gwion Sais) [1.1]