| b 1222, Okehampton, Devonshire, , England | Milo De Courtenay | > | d 08 Apr 1269, | Renaud (Reginald) Courtenay, [Seigneur de] | Ermengarde De Nevers | > |
| Renaud 'Reginald' Seigneur Courtenay | b 1100 | Frederic De Donjon | > | |
| | b 1125 | Hawise De Donjon | unknown | ||
| Robert De Courtenay, [Sir Knight] | d 27 Sep 1194 | b 1113 | ||
| |b 1170 | | | William De Curcy | ||
| |d 26 Jul 1242 | Hawise De Curcy | b 1090 | Robert D' Avranches | |
| | | b 1135 | Maud D' Avranches, [Dame Du Sap] | Miss De Doll | |
| Hawise De Courtenay | d 31 Jul 1209 | b 1097 | Richard De Reviers, [Seigneur] | > |
| |John De Neville-2 + | Baldwin De Rivers, [Earl of Devon] | Adelise Peverel | > | | | William Reviers, [Earl of Devon] | b 1090 |
| | | |b 1128 | Adeliza Lucia Debaalum | ||
| Mary De Reviers | d 10 Sep 1217 | b 1099 | Waleran Count Of Meulan, [Earl] | > |
| b 1196 | | | Robert De Beaumont, [Count] | Agnes De Montfort, [Countess] | > |
| Mabel De Beaumont, [Countess] | b 1130 | Rainald De Dunstanville, [Earl] | > | |
| b 1170 | Maud De Dunstanville, [Countess] | Beatrice Fitzwilliam, [Countess] | > | |
| d 01 May 1204 | b 1143 | |||