Mabile de Beaumont was born on an unknown date to Robert de Beaumont, Count of Meulan (c1142-1204) and Maud FitzRoy (c1143-) and died after 1 May 1204 of unspecified causes. She married William de Redvers, 5th Earl of Devon (?-1217) .
Children
| Name | Birth | Death | Joined with |
| Baldwin de Redvers (c1200-1216) | |||
| Maude de Redvers (c1196-aft1242) | 1196 | 1242 | Robert de Courtenay (c1160-1242) |
| Joan de Redvers (?-?) | |||
Footnotes (including sources)
| ‡ General |