| | Edmund de Mortimer 1261–1304 | | |
| | JohnII FitzAlan Earl of Arundel 1246–1271 | | |
| | Roger II deMortimer 1231–… | | |
| | Gwladys Ddu ferch Llywellyn Aberffraw 1194–… Ralph deMortimer 1190–1246 | | |
Margaret Aberffraw 1202–… | | |
| | WilliamII deBraiose …–1326 | | |
| | William deBreuse 1224–AD 1290/91 | | |
| | Margaret verchLlewelyn 1208–… | | |
Angharad verchLlewelyn …–… | | |
David Dafydd Prince of Wales …–… | | |
| | Llywelyn Fawr Aberffraw 1173–1240 Tangwystl ferch Llywarch …–… Joanna of England 1210–1236 | | |
| | Iowerth Drwyndwn Gwynedd 1130–1174 | | | | Madog Powys ap Maredydd …–… Susanna verch Gruffydd 1095–… | | | | Gruffyd Gwunedd-Powys 1055–1136 Angharad verch Owain 1065–… | | | | Cynan Gwunedd-Powys 1014–1063 | | | | Iago Gwynedd Powys 974–1039 Afrandreg verch Gweir 984–… | | |
| | | Maelcocre of Leinster 1000–… | | |
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| | | Morfydd verch Goronwy 1048–… | | | | Gwerdd verch Cynvyn 1024–… | | |
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| | | Owain Fawr Gwynedd 1087–1169 Gwladys ferch Llywarch …–… | | | | Gruffyd Gwunedd-Powys 1055–1136 Angharad verch Owain 1065–… | | | | Cynan Gwunedd-Powys 1014–1063 | | | | Iago Gwynedd Powys 974–1039 Afrandreg verch Gweir 984–… | | |
| | | Maelcocre of Leinster 1000–… | | |
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| | | Morfydd verch Goronwy 1048–… | | | | Gwerdd verch Cynvyn 1024–… | | |
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