Nielsen Hayden genealogy
Efa ferch Gwyn ap Gruffudd
Generation: 1
Generation: 2
Generation: 3
Generation: 4
1. Efa ferch Gwyn ap Gruffudd Family/Spouse: Caradog. Caradog was born about 1200. [Group Sheet] [Family Chart]
Children:
Generation: 2
2. Senena ferch Caradog 
(1.Efa1)Family/Spouse: Grufudd ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd. Grufudd (son of Llywelyn Fawr ap Iorwerth and Tangwystl) died on 1 Mar 1244 in Tower of London, London, England. [Group Sheet] [Family Chart]
Children:
- 3. Dafydd III ap Gruffudd ap Llywelyn ab Iorwerth, Prince of North Wales died on 3 Oct 1283 in Shrewsbury, Shropshire, England.
- 3. Dafydd III ap Gruffudd ap Llywelyn ab Iorwerth, Prince of North Wales
Generation: 3
3. Dafydd III ap Gruffudd ap Llywelyn ab Iorwerth, Prince of North Wales (2.Senena2, 1.Efa1) died on 3 Oct 1283 in Shrewsbury, Shropshire, England. Family/Spouse: (Unknown mistress of Dafydd III). [Group Sheet] [Family Chart]
Children:
- 4. Dafydd Goch ap Dafydd ap Gruffudd ap Llywelyn was born about 1270.
- 4. Dafydd Goch ap Dafydd ap Gruffudd ap Llywelyn
Generation: 4
4. Dafydd Goch ap Dafydd ap Gruffudd ap Llywelyn (3.Dafydd3, 2.Senena2, 1.Efa1) was born about 1270. Family/Spouse: Unknown. [Group Sheet] [Family Chart]
Children:
- 5. Gruffudd ap Dafydd Goch ap Dafydd ap Gruffudd died after 1351.
- 5. Gruffudd ap Dafydd Goch ap Dafydd ap Gruffudd