 Father | Male5th 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 |
| Married | Aft 03 Jan 1383 [1] | |
| Other Spouse | Lady Joan Holland Joan Holland | F4588 | |
| Married | ||
| Father | 4th Baron Willoughby de Eresby Robert Willoughby | F4575 Group Sheet | |
| Mother | Margery la Zouche | F4575 Group Sheet | |
 Mother | FemaleLucy Le Strange |
| Born | Abt 1352 | Knockin, Shropshire, England |
| Died | Aft 1405 | |
| Buried | ||
| Father | 5th Lord Strange of Knockin Roger Le Strange | F15 Group Sheet | |
| Mother | Aline Fitzalan | F15 Group Sheet | |
| Child 1 | Female Elizabeth Willoughby |
| Born | Abt 1386 | Eresby, Lincolnshire, England |
| Died | ||
| Buried | ||
| Spouse | 5th Baron Beaumont Henry Beaumont | F35 | |
| Married | ||
| Child 2 | Male Sir Thomas Willoughby |
| Born | Abt 1387 | Eresby, Lincolnshire, England |
| Died | Abt 1432 | |
| Buried | ||
| Spouse | Joan Arundel | F36 | |
| Married | ||
| Child 3 | Female + Margery Willoughby |
| Born | Abt 1390 | Eresby, Lincolnshire, England |
| Died | Bef 22 Oct 1452 | Yorkshire, England |
| Buried | ||
| Spouse | 4th Baron Fitzhugh Sir William Fitzhugh | F2 | |
| Married | Bef 18 Nov 1406 | Ravensworth, Yorkshire, England |
| Child 4 | Male 6th Baron Willoughby de Eresby Robert Willoughby |
| Born | Eresby, Lincolnshire, England |
|
| Died | ||
| Buried | ||
| Spouse | Elizabeth Montagu | F4583 | |
| Married | ||
| Spouse | Maud Stanhope | F4584 | |
| Married | ||
| Child 5 | Female Margaret Willoughby |
| Born | Eresby, Lincolnshire, England |
|
| Died | ||
| Buried | ||
| Spouse | Sir Thomas Skipwith | F4587 | |
| Married | ||
| Sources |
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