Family: Ralph De Mortimer / Princess Gwladus Ferch Llywelyn (F5098)
Roger De Mortimer (1152-1214) 
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Isabel De Ferrers ( -1252)
|
Joane Mortimer (1194-1268)  |
| Hugh De Mortimer ( -1227) |
| Prince Of North Wales Llywelyn Ap Iorwerth (1173-1240)
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| Princess of Wales and Lady of Snowdon Joan (1191-1237)
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| Helen Ferch Llywelyn (1206-1253) |
| Prince of Gwynedd Dafdd Ap Llywelyn (1215-1246) |
| Ralph De Mortimer (1197-1246)
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| Princess Gwladus Ferch Llywelyn (1206-1251)
|
| 1st Baron Wigmore Roger De Mortimer (1231-1282) |
