Count Guillaume I of HAINAULT
1280 - 1337(Notes: You may have to scroll down or right to see chart.)
| John BEAUFORT, 1st Earl of Somerset | |
| B: | 1373 |
| D: | 16 Mar 1410 |
| Lady Joan BEAUFORT, Countess of Westmorland | |
| B: | Abt 1379 |
| Beaufort Castle | |
| D: | 13 Nov 1440 |
| Howden, County York, England | |
| Earl Sir Ralph de NEVILLE, 1st Earl of Westmorland | |
| B: | Abt 1346 |
| D: | 21 Oct 1425 |
| Staindrop, Durham, England, United Kingdom | |
| Duke John of GAUNT | |
| B: | 24 Jun 1340 |
| Gent, Oost-Vlaanderen, Belgium | |
| D: | 3 Feb 1398/9 |
| Leicester Castle | |
| Katharine (DE) ROET, Duchess of Lancaster | |
| B: | 25 Nov 1350 |
| D: | 10 May 1403 |
| Queen Philippa of HAINAULT | |
| B: | 24 Jun 1311 |
| Valenciennes, Nord-Pas-de-Calais, France | |
| D: | 14 Aug 1369 |
| Windsor Castle, England | |
| King Edward III of ENGLAND | |
| B: | 13 Nov 1312 |
| Windsor Castle, England | |
| D: | 21 Jun 1377 |
| Richmond, County Surrey, England | |
| Count Guillaume I of HAINAULT | |
| B: | 1280 |
| D: | 13 Jun 1337 |
| Jeanne de VALOIS | |
| B: | 1295 |
| D: | 1342 |