| Father | Sir Henry FITZHUGH 3rd Baron Fitzhugh (1358 - 1425) |
| Mother | Elizabeth GREY (1365 - 1427) |
| Sibling | William FITZHUGH III (1398 - 1452) |
| Sibling | Rev. Robert FITZHUGH (1383 - 1436) |
| Sibling | Joan FITZHUGH (1388 - 1403) |
| Sibling | Henry FITZHUGH (1392 - 1424) |
| Sibling | John FITZHUGH (1394 - 1424) |
| Sibling | Maude FITZHUGH (1394 - 1467) |
| Sibling | Eleanor FITZHUGH (1395 - 1457) |
| Sibling | Margaret FITZHUGH (1395 - ) |
| Sibling | Geoffrey FITZHUGH (1406 - 1424) |
| Sibling | Ralph FITZHUGH (1408 - 1424) |
| Sibling | Herbert FITZHUGH (1412 - 1472) |
| Sibling | Richard FITZHUGH (1414 - ) |