| William de Riviers (or Vernon) Earl of Devon ( - 1217) |
Warin FitzGerold (ca1167 - >1216) |
| Mabel de Meulan ( - >1204) |
Alice de Curcy |
| Baldwin de Riviers (or Vernon) | Margaret FitzGerold |
| b. aft 28 Apr 1200 d. 1 Sep 1216 . dvp. |
b. d. bef 29 Sep 1252 . Sole heir. |
| Baldwin III de Riviers (or Vernon) Earl of Devon |