| William Magna Charta Surety de Mowbray of Thirsk & Slingsby (~1170 - 1222) |
|
| Avice (Avie) [--?--] (1176 - <1223) |
| Nele (or Nigel) de Mowbray | Maud de Camvile |
| b. abt 1200 d. 1230, Younger brother Roger was heir bur. occ. cen. im. . ud. |
b. d. bur. occ. cen. im. . ud. |