| Roger MORTIMER , Earl of March (? - 1360) |
Lionel PLANTAGENET , Duke of Clarence, Earl of Ulster (1338 - 1368) |
| Elizabeth DE BURGH , Countess of Ulster (1332 - 1363) |
| Edmund MORTIMER , Earl of March | Philippa PLANTAGENET , Countess of Ulster |
| ali. b. 1351 bp. d. Dec 26, 1381 bur. occ. rel. edu. |
ali. Philippa of Ulster b. Aug 16, 1355, Kent, England bp. d. Jan 1, 1382 bur. Wigmore, Hertfordshire, England occ. rel. edu. |
| Roger MORTIMER , Earl of March, Earl of Ulster |