| | Catherine de Courtenay …–… | | |
| | Matilda (Maud) Beaumont …–1467 | | |
| | Edward de Courtenay of Godlington 1329–1372 | | |
| | Hugh de Courtenay 2nd Earl of Devon 1303–1377 Margaret de Bohun 1311–1391 | | |
| | Hugh de Courtenay 1273–1340 | | |
| | | | | | | | | | | William Cantilupe 1185–1240 | | | | William Cantilupe 1159–1239 |
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