Nielsen Hayden genealogy
Ancestors of Iorwerth Drwyndwn ap Owain Gwynedd
- Abt 1174 ┌── Idwal ap Meuric, King of Gwynedd ( - Abt 997) =>
┌── Iago ab Idwal, King of Gwynedd ( - 1039)
┌── Cynan ab Iago
┌── Gruffydd ap Cynan ab Iago, King of Gwynedd (Abt 1055 - 1137)(m. Abt 1095)
│ │ ┌── Sitric mac Amlab, King of Dublin ( - 1042) =>
│ │ ┌── Amlaíb mac Sitric ( - 1034)
│ │ │ └── Slani ingen Briain =>
│ │ │
│ └── Radnailt of Dublin
│ │
│ │ ┌── Dunlaing Mac Tuathail, King of Leinster ( - Apr 1014 Clontarf, Dublin, Ireland) =>
│
┌── Owain Gwynedd, King of Gwynedd ( - 1169 bur.Bangor Cathedral, Bangor, Gwynedd, Wales)
│ │
│ │ ┌── Edwin of Tegeingl ( - 1073)
│ │ ┌── Owain ab Edwin ( - 1104)
│ │ │ │
│ │ │ │ ┌── Cynfyn ap Gwerystan (Abt 1000 - ??) =>
│ │ │ └── Iwerydd ferch Cynfyn
│ │ │
│ └── Angharad ferch Owain ( - 1162)(m. Abt 1095)
│
Iorwerth Drwyndwn ap Owain Gwynedd ( - Abt 1174)
│
│ ┌── Caradog
│ ┌── Trahearn ap Caradog, King of Gwynedd (of Arwystli, Wales - 1081)
│ ┌── Llywarch ap Trahearn ( - Aft 1124)