Nielsen Hayden genealogy
Gwenllian ferch Owain
1. Gwenllian ferch Owain (daughter of Owain Gwynedd, King of Gwynedd and Gwladus ferch Llywarch). Family/Spouse: Owain Cyfeiliog ap Gruffudd ap Maredudd ap Bleddyn ap Cynfyn. Owain (son of Gruffudd ap Maredudd and Gwerful ferch Gwrgeneu) was born about 1130; died in 1197 in Monastery of Strata Marcella, Welshpool, Montgomeryshire, Wales. [Group Sheet] [Family Chart]
Children:- Gwenwynwyn died about 1216 in Cheshire, England.
- Constance ferch Owain
2. 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 Gwladus ferch Llywarch. [Group Sheet] [Family Chart]
3. Gwladus ferch Llywarch (daughter of Llywarch ap Trahearn). Children:
- Iorwerth Drwyndwn ap Owain Gwynedd died about 1174.
- 1. Gwenllian ferch Owain
Generation: 3
4. Gruffydd ap Cynan ab Iago, King of Gwynedd was born about 1055 (son of Cynan ab Iago and Radnailt of Dublin); died in 1137. Gruffydd married Angharad ferch Owain about 1095. Angharad (daughter of Owain ab Edwin and (Unknown daughter of Ednywain Bendew)) died in 1162. [Group Sheet] [Family Chart]
5. Angharad ferch Owain (daughter of Owain ab Edwin and (Unknown daughter of Ednywain Bendew)); died in 1162. Children:
- 2. Owain Gwynedd, King of Gwynedd died in 1169; was buried in Bangor Cathedral, Bangor, Gwynedd, Wales.
- Susanna ferch Gruffydd ap Cynan
- Gwenllian ferch Gruffudd died in 1136.
- Cadwaladr ap Gruffudd ap Cynan, King in Wales died in 1172; was buried in Bangor Cathedral, Bangor, Gwynedd, Wales.
6. Llywarch ap Trahearn (son of Trahearn ap Caradog, King of Gwynedd); died after 1124. Children:
Generation: 4
8. Cynan ab Iago (son of Iago ab Idwal, King of Gwynedd). Cynan married Radnailt of Dublin. [Group Sheet] [Family Chart]
9. Radnailt of Dublin (daughter of Amlaíb mac Sitric and Máelcorcre ingen Dúnlaing). Children:
- 4. Gruffydd ap Cynan ab Iago, King of Gwynedd was born about 1055; died in 1137.
10. Owain ab Edwin (son of Edwin of Tegeingl and Iwerydd ferch Cynfyn); died in 1104. Owain married (Unknown daughter of Ednywain Bendew). [Group Sheet] [Family Chart]
11. (Unknown daughter of Ednywain Bendew) Children:
- 5. Angharad ferch Owain died in 1162.
- Aldud ab Owain ab Edwin
- Gronwy ab Owain ab Edwin was born about 1070.
12. Trahearn ap Caradog, King of Gwynedd was born in of Arwystli, Wales (son of Caradog); died in 1081. Children:
- 6. Llywarch ap Trahearn died after 1124.
Generation: 5
16. Iago ab Idwal, King of Gwynedd (son of Idwal ap Meuric, King of Gwynedd); died in 1039. Children:
18. Amlaíb mac Sitric (son of Sitric mac Amlab, King of Dublin and Slani ingen Briain); died in 1034. Amlaíb married Máelcorcre ingen Dúnlaing. [Group Sheet] [Family Chart]
19. Máelcorcre ingen Dúnlaing (daughter of Dunlaing Mac Tuathail, King of Leinster). Children:
20. Edwin of Tegeingl died in 1073. Edwin married Iwerydd ferch Cynfyn. [Group Sheet] [Family Chart]
21. Iwerydd ferch Cynfyn (daughter of Cynfyn ap Gwerystan and (Unknown wife or mistress of Cynfyn ap Gwerystan)). Children:
- 10. Owain ab Edwin died in 1104.
- Uchdrud ab Edwin ap Gronwy was born about 1030.
24. Caradog Children:
- 12. Trahearn ap Caradog, King of Gwynedd was born in of Arwystli, Wales; died in 1081.
Generation: 6
32. Idwal ap Meuric, King of Gwynedd (son of Meuric ab Idwal Voel); died about 997. Children:
- 16. Iago ab Idwal, King of Gwynedd died in 1039.
36. Sitric mac Amlab, King of Dublin (son of Amlaíb Cuaran, King of Dublin & York and Gormlaith ingen Murchada); died in 1042. Sitric married Slani ingen Briain. [Group Sheet] [Family Chart]
37. Slani ingen Briain (daughter of Brian Boru, King of Munster and Ireland and (Unknown wife of Brian Boru)). Children:
- 18. Amlaíb mac Sitric died in 1034.
38. Dunlaing Mac Tuathail, King of Leinster (son of Tuathal mac Augaire, King of Leinster); died in Apr 1014 in Clontarf, Dublin, Ireland. Children:
- 19. Máelcorcre ingen Dúnlaing
- Donncuan ua Tutahail, King of Leinster died in 1016.
42. Cynfyn ap Gwerystan was born about 1000 (son of Gwerystan). Cynfyn married (Unknown wife or mistress of Cynfyn ap Gwerystan). [Group Sheet] [Family Chart]
43. (Unknown wife or mistress of Cynfyn ap Gwerystan) Children: