| Isabel de Beaumont | ||
| ∞ | ||
| Henry of Grosmont
* ~1310 † 1361 | ||
| Blanche of Lancaster
* 1345 † 1368 | ||
| ∞ 1359 | 
| |
John of Gaunt
![[mer]](up.png)
* 1340 † 1399 | ||
| Philippa of Lancaster
* 1360 † 1415 | ||
| >> | ||
| John of Lancaster
* 1362 † ~1365 | ||
| Elizabeth of Lancaster
* 1364 † 1426 | ||
| Edward of Lancaster
* 1365 † ~1365 | ||
| John of Lancaster
* 1366 † ~1367 | ||
| Henry IV of England
* 1367 † 1413 | ||
| >> | |
| Isabel of Lancaster
* 1368 † 1368 | ||