Nielsen Hayden genealogy
Gwenllian ferch Ednyfed Fychan
1. Gwenllian ferch Ednyfed Fychan Family/Spouse: Tegwared y Baiswen ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd. Tegwared (son of Llywelyn Fawr ap Iorwerth and (One of the several mistresses of Llywelyn ap Iorwerth)) was born about 1200. [Group Sheet] [Family Chart]
Children:
Generation: 2
2. Angharad ferch Tegwared y Baiswen ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd 
(1.Gwenllian1)Family/Spouse: Gruffudd ap Hywel ap Maredudd ab Einion. Gruffudd (son of Hywel ap Maredudd ab Einion ap Caradog and Gwenllian ferch Gruffudd ab Ednyfed Fychan) was born about 1270. [Group Sheet] [Family Chart]
Children:
- 3. Ieuan ap Gruffudd ap Hywel was born about 1300 in of Eifionydd, Caernarvonshire, Wales.
- 3. Ieuan ap Gruffudd ap Hywel
Generation: 3
3. Ieuan ap Gruffudd ap Hywel (2.Angharad2, 1.Gwenllian1) was born about 1300 in of Eifionydd, Caernarvonshire, Wales. Family/Spouse: Efa ferch Gruffudd ap Dafydd Goch ap Dafydd. Efa (daughter of Gruffudd ap Dafydd Goch ap Dafydd ap Gruffudd) died after 1351. [Group Sheet] [Family Chart]
Children:
- 4. Nest ferch Ieuan ap Gruffudd was born in of Eifionydd, Caernarvonshire, Wales.
- 4. Nest ferch Ieuan ap Gruffudd
Generation: 4
4. Nest ferch Ieuan ap Gruffudd (3.Ieuan3, 2.Angharad2, 1.Gwenllian1) was born in of Eifionydd, Caernarvonshire, Wales. Family/Spouse: Dafydd Fychan ap Dafydd Llwyd ap Cynwrig. Dafydd (son of Dafydd Llwyd and Angharad ferch Gynffydd ap Tydyr) was born in of Trefeilir in Malltraeth, Anglesey, Wales. [Group Sheet] [Family Chart]
Children:
- 5. Margred ferch Dafydd Vychan was born in of Trefeilir in Malltraeth, Anglesey, Wales.
- 5. Margred ferch Dafydd Vychan