Isabel Fritzalan
- Yes, date unknown| Third Cousins | |
|---|---|
| 1 | Joan Beaufort d. Yes, date unknown |
| 2 | Philippa Plantagenet d. 1382 |
| 3 | Margaret Holland d. Yes, date unknown |
| 4 | Richard Earl Of Cambridge d. 1415 |
| 5 | Philippa _____ , b. 1360 d. 1415 |
| 6 | Henry IV King Of England , b. Apr 1366 d. 20 Mar 1413 |
| 7 | Richard II King Of England , b. 1367 d. 1399 |
| 8 | Catherine _____ , b. 1372 d. 1418 |
| 9 | John, Marquess of Dorset Beaufort
, b. 1373 d. 16 Mar 1410, St Katherine by the To  |
| Fourth Cousins | |
|---|---|
| 1 | Philippa _____ , b. 1360 d. 1415 |
| 2 | Henry IV King Of England , b. Apr 1366 d. 20 Mar 1413 |