Nielsen Hayden genealogy
Matilda de Briouze

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- 1 Matilda de Briouze [1] d. 29 Dec 1210
Gruffudd ab Yr Arglwydd Rhys d. 25 Jul 1201
- 2 Owain ap Gruffudd ab Yr Arglwydd Rhys [1.1]
d. 18 Jan 1236
(Unknown daughter of Gwion Sais)
- 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
- 5 Llywelyn ab Owain ap Maredudd ab Owain [1.1.1.1.1]
d. 1309
- 6 Thomas ap Llewellyn ab Owain ap Maredudd [1.1.1.1.1.1]
d. 1343
Elinor ferch Maredudd
- 7 Margred ferch Thomas [1.1.1.1.1.1.1]
Tudur ap Gronwy d. 1367
- 8 Maredudd ap Tudur [1.1.1.1.1.1.1.1]
d. Aft 1406 [ =>]
- 8 Maredudd ap Tudur [1.1.1.1.1.1.1.1]
- 7 Margred ferch Thomas [1.1.1.1.1.1.1]
- 6 Thomas ap Llewellyn ab Owain ap Maredudd [1.1.1.1.1.1]
- 5 Llywelyn ab Owain ap Maredudd ab Owain [1.1.1.1.1]
- 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 Owain ap Gruffudd ab Yr Arglwydd Rhys [1.1]