Nielsen Hayden genealogy
Ancestors of Llywelyn Fawr ap Iorwerth
Abt 1173 - 1240 (~ 67 years) ┌── Gruffydd ap Cynan ab Iago, King of Gwynedd (Abt 1055 - 1137)(m. Abt 1095) =>
┌── Owain Gwynedd, King of Gwynedd ( - 1169 bur.Bangor Cathedral, Bangor, Gwynedd, Wales)
│ └── Angharad ferch Owain ( - 1162)(m. Abt 1095) =>
│
┌── Iorwerth Drwyndwn ap Owain Gwynedd ( - Abt 1174)
│ │
│ │ ┌── Llywarch ap Trahearn ( - Aft 1124) =>
│ └── Gwladus ferch Llywarch
│
Llywelyn Fawr ap Iorwerth (Abt 1173 - 11 Apr 1240 Aberconwy Abbey, Conwy, Wales)
│
│ ┌── Maredudd ap Bleddyn ap Cynfyn (of Powys, Wales - 1132) =>
│ ┌── Madog ap Maredudd, Prince of Powys Fadog ( - 1160 Winchester, Hampshire, England)
│ │ └── Hunydd ferch Einudd =>
│ │