| John Deincourt (~1284 - ) |
William de Ros 2nd Lord Ros of Helmsley (~1291 - 1343) |
| Margery de Badlesmere (1306 - 1363) |
| Sir William Deincourt Jr. | Millicent de Ros |
| b. abt 1304, guess d. 2 Jun 1364 bur. occ. cen. im. . ud. |
b. Hamlake, Yorkshire, England d. 22 Jun 1379 bur. occ. cen. im. . ud. |
| Spouses: 1, 2 |
| Margaret Deincourt |