William De Willoughby
- 1306Drag or scroll to see more of the chart.
| John (3rd Lord Willoughby) De Willoughby Bef 1329-1372 |
| John (3rd Lord Willoughby) De Willoughby | |
| B: | Bef 6 Jan 1329 |
| D: | 29 Mar 1372 |
 | Cecily (of Suffolk) De Ufford -Yes, date unknown |
| Cecily (of Suffolk) De Ufford | |
| M: | Bef 1349 |
| D: | Yes, date unknown |
| John (2nd Lord Willoughby) De Willoughby 1304-1349 |
| John (2nd Lord Willoughby) De Willoughby | |
| B: | 6 Jan 1303-1304 |
| D: | 13 Jun 1349 |
| Joan (of Edgefield) Roscelyn -Yes, date unknown |
| Joan (of Edgefield) Roscelyn | |
| M: | 2 Jul 1323 |
| D: | Yes, date unknown |
| Robert (1st Lord Willoughby) De Willoughby 1260-Bef 1317 |
| Robert (1st Lord Willoughby) De Willoughby | |
| B: | Between 1250 and 1260 |
| D: | Bef 25 Mar 1317 |
| Margaret Deincourt -Yes, date unknown |
| Margaret Deincourt | |
| D: | Yes, date unknown |
| William (Sir) (of Ingoldnells) De Hiltoft -Yes, date unknown |
| William (Sir) (of Ingoldnells) De Hiltoft | |
| D: | Yes, date unknown |
| Alice De Muer -Yes, date unknown |
| Alice De Muer | |
| D: | Yes, date unknown |
| Agnes Munby -Yes, date unknown |
| Agnes Munby | |
| D: | Yes, date unknown |
| William (Sir) De Hiltoft -Yes, date unknown |
| William (Sir) De Hiltoft | |
| D: | Yes, date unknown |
| Thomas De Willoughby -Yes, date unknown |
| Thomas De Willoughby | |
| D: | Yes, date unknown |
| Margaret De Munby -Yes, date unknown |
| Margaret De Munby | |
| D: | Yes, date unknown |
| William De Willoughby -1306 |
| William De Willoughby | |
| D: | 1306 |
| Alice (Heiress of Eresby) Beke -Yes, date unknown |
| Alice (Heiress of Eresby) Beke | |
| D: | Yes, date unknown |