| William de Vernon de Reviers 5th Earl Devon (1155 - 1217) |
|
| Mabel Mabirie Maud de Beaumont Countess Of Devon (~1170 - >1204) |
| [--?--] | Joan de Vernon Reviers |
| b. d. bur. occ. cen. im. . ud. |
b. abt 1202 d. Resided Isle of Wight, Hampshire, England bur. occ. cen. im. . ud. |