| Roger de Mortimer Knt., 2nd Earl of March, etc. (1328 - 1359) |
Lionel of Antwerp K.G., 1st Duke of Clarence, etc. (1338 - 1368) |
| Philippe de Montagu Countess March (~1332 - 1381) |
Elizabeth de Burgh (1332 - 1363) |
| Edmund de Mortimer Knt., 3rd Earl of March, etc. | Philippe of Clarence suo jure Countess of Ulster |
| b. 1 Feb 1351/1352, Langoed (in Llyswen), Breçon, Wales d. 27 Dec 1381, Dominican Friary, Cork, Ireland bur. (1) Cork, Ireland occ. cen. im. . ud. |
b. 16 Aug 1355, Elham Palace, Elham, Kent, England d. 5 Jan 1380/1 bur. Wigmore Abbey, Herefordshire, England occ. cen. im. . ud. |
| Elizabeth Mortimer Roger de Mortimer Knt., 4th Earl of March, Earl of Ulster Philippe de Mortimer Edmund Mortimer Knt. |