(Notes: You may have to scroll down or right to see chart.)
| BEAUFORT John (1371) | |
| B: | 1371 |
| , Lincolnshire, England | |
| D: | 16 Mar 1410 |
| London, Middlesex, England | |
| PERCY Alice | |
| B: | 1369 |
| Norwich, , England | |
| PLANTAGENET John of Gaunt (1340) | |
| B: | Mar 1340 |
| Belguim | |
| D: | 03 Feb 1399 |
| Leicester, , England | |
| DE ROET Catherine (1350) | |
| B: | 1350 |
| Hainault, Belgium | |
| D: | 10 May 1403 |
| , Lincolnshire, England | |
| DE HAINAULT Phillippa (1311) | |
| B: | 24 Jun 1311 |
| , , Belgium | |
| D: | 14 Aug 1369 |
| , , England | |
| PLANTAGENET Edward III (1312) | |
| B: | 13 Nov 1312 |
| , , England | |
| D: | 21 Jun 1377 |
| , , England | |
|
| AVESNES William D (1286) | |
| B: | 1286 |
| , France | |
| D: | 07 Jun 1337 |
| , , France | |
| DE VALOIS Jean (1294) | |
| B: | 1294 |
| Pickardie, France | |
| D: | 07 Mar 1342 |
| , France | |