| Father | Otho Solomon Gilbert Sheriff of Devonshire (1419 - 1493) |
| Mother | Lady Elizabeth Hill Baroness Compton (1423 - 1456) |
| Sibling | Isabella Gilbert (1451 - 1494) |
| Sibling | Sir Geoffrey Gilbert (1444 - 1552) |
| Sibling | Sir Otho Gilbert II (1448 - 1494) |
| Sibling | Richard Gilbert (1456 - 1524) |
| Sibling | John Gilbert I (1450 - 1494) |
| Sibling | Sir Thomas Gilbert (1450 - 1529) |
| Sibling | William Gilbert (1452 - 1531) |
| Sibling | Mary Gilbert (1452 - 1494) |
| Sibling | Joan Gilbert (1442 - 1502) |
| Sibling | Richard Gilbert (1447 - ) |
| Sibling | Edward Gilbert (1443 - 1551) |
| Sibling | John Gilbert (1449 - 1539) |
| Sibling | William Gilbert (1456 - ) |