| Edmund de Mortimer Knt., 3rd Earl of March, etc. (1352 - 1381) |
|
| Philippe of Clarence suo jure Countess of Ulster (1355 - 1381) |
| Edmund Mortimer Knt. | Katherine |
| b. 9 Nov 1376, Ludlow Castle, Shropshire, England d. 1409, Harlech Castle, Harlech, Merionteithshire, Wales bur. occ. cen. im. . ud. |
b. d. bef 1413, St. Swithin's Church, London, England bur. occ. cen. im. . ud. |