 Father | Male4th Baron Willoughby de Eresby Robert Willoughby |
| Born | Abt 1350 | England  |
| Died | 09 Aug 1396 | Eresby, Lincolnshire, England |
| Buried | ||
| Married | Bef 01 Oct 1369 | |
| Other Spouse | 5th Baroness Latimer Elizabeth Latimer | F4579 | |
| Married | ||
| Father | John Willoughby | F4628 Group Sheet | |
| Mother | Cecily Ufford | F4628 Group Sheet | |
 Mother | FemaleMargery la Zouche |
| Born | Abt 1352 | England |
| Died | 18 Oct 1391 | Lincolnshire, England |
| Buried | ||
| Father | 2nd Baron Zouche of Harringworth William la Zouche | F4576 Group Sheet | |
| Mother | Elizabeth de Ros | F4576 Group Sheet | |
| Child 1 | Male + 5th Baron Willoughby de Eresby William Willoughby |
| Born | Abt 1370 | Eresby, Lincolnshire, England |
| Died | 06 Dec 1409 | Edgefield, Norfolk, England |
| Buried | Abt 06 Dec 1409 | St. James Church, Spilsby, Lincolnshire, England |
| Spouse | Lucy Le Strange | F4 | |
| Married | Aft 03 Jan 1383 | |
| Spouse | Lady Joan Holland Joan Holland | F4588 | |
| Married | ||
| Child 3 | Male Sir Thomas Willoughby |
| Born | ||
| Died | Abt 20 Aug 1417 | |
| Buried | ||
| Spouse | Elizabeth Neville | F4582 | |
| Married | ||
