Nielsen Hayden genealogy
(Unknown daughter of Thomas ap Rhodri)
1. (Unknown daughter of Thomas ap Rhodri) (daughter of Thomas ap Rhodri ab Owain Gwynned and Margred ferch Einion ap Seisyll). Family/Spouse: Maredudd ab Owain ap Gruffudd ab Yr Arglwydd Rhys. Maredudd (son of Owain ap Gruffudd ab Yr Arglwydd Rhys and (Unknown daughter of Gwion Sais)) died in Mar 1265 in Llanbardarn Fawr, Ceredigion, Wales; was buried in Strata Florida Abbey, Ceredigion, Wales. [Group Sheet] [Family Chart]
Children:- Owain ap Maredudd ab Owain ap Gruffudd was born in of Iscoed, Ceredigion, Wales; died on 15 Aug 1275; was buried in Strata Florida Abbey, Ceredigion, Wales.
2. Thomas ap Rhodri ab Owain Gwynned was born about 1170 (son of Rhodri ab Owain Gwynned). Thomas married Margred ferch Einion ap Seisyll. [Group Sheet] [Family Chart]
3. Margred ferch Einion ap Seisyll (daughter of Einion ap Seisyll and Nest ferch Madog). Children:
Generation: 3
4. Rhodri ab Owain Gwynned (son of Owain Gwynedd, King of Gwynedd and Cristin ferch Gronwy ab Owain ab Edwin); died in 1195. Children:
- 2. Thomas ap Rhodri ab Owain Gwynned was born about 1170.
6. Einion ap Seisyll was born about 1170 (son of Seisyll and Isabel ferch Bradwen). Einion married Nest ferch Madog. [Group Sheet] [Family Chart]
7. Nest ferch Madog (daughter of Madog ap Cadwgon ap Madog ap Cadwgon and Efa ferch Madog ap Philip ab Uchtrud). Children:
Generation: 4
8. Owain Gwynedd, King of Gwynedd (son of Gruffydd ap Cynan ab Iago, King of Gwynedd and Angharad ferch Owain); died in 1169; was buried in Bangor Cathedral, Bangor, Gwynedd, Wales. Owain married Cristin ferch Gronwy ab Owain ab Edwin. Cristin (daughter of Gronwy ab Owain ab Edwin and Genilles ferch Hoedlyw ab Ithel an Edryd ab Inethan ab Iasedd ap Carwed ap Marchudd ap Cynan) was born in of Tegeingl, Wales. [Group Sheet] [Family Chart]
9. Cristin ferch Gronwy ab Owain ab Edwin was born in of Tegeingl, Wales (daughter of Gronwy ab Owain ab Edwin and Genilles ferch Hoedlyw ab Ithel an Edryd ab Inethan ab Iasedd ap Carwed ap Marchudd ap Cynan). Children:
- Angharad ferch Owain
- 4. Rhodri ab Owain Gwynned died in 1195.
12. Seisyll was born about 1130 in of Meirionnydd, Wales. Seisyll married Isabel ferch Bradwen. [Group Sheet] [Family Chart]
13. Isabel ferch Bradwen Children:
- 6. Einion ap Seisyll was born about 1170.
14. Madog ap Cadwgon ap Madog ap Cadwgon was born about 1170 in of Nannau, Meirionnydd, Wales (son of Cadwgon ap Madog ap Cadwgon ap Bleddyn and Gwenllian ferch Owain Gwynedd). Madog married Efa ferch Madog ap Philip ab Uchtrud. [Group Sheet] [Family Chart]
15. Efa ferch Madog ap Philip ab Uchtrud Children: