| Father | Sir William DE RADCLIFFE "Magnus the Great" (1270 - 1333) |
| Mother | Margaret DE CULCHETH (1270 - 1349) |
| Sibling | Elizabeth DE RADCLIFFE (1315 - 1336) |
| Sibling | Adam RADCLIFFE (1307 - ) |
| Sibling | John RADCLIFFE (1290 - ) |
| Sibling | Agnes RADCLYFFE (1313 - ) |
| Sibling | Ann RADCLIFFE (1313 - ) |
| Sibling | Alice RADCLIFFE (1315 - 1354) |
| Sibling | Margaret RADCLYFFE (1319 - 1366) |
| Sibling | Magota RADCLIFFE (1320 - ) |
| Sibling | William RADCLIFFE (1304 - ) |
| Sibling | Lord William DE RADCLIFF (1316 - 1360) |
| Sibling | Richard "Dominus" "of Winmarleigh" DE RADCLIFFE (1305 - 1375) |
| Sibling | Maude DERADCLIFFE (1301 - 1358) |