The 3rd Earl of Ulster WILLIAM De BURGH
1312 - 1333 (20 years)(
= Descendancy chart to this point, 
= Expand, 
= Collapse)
- 1 The 3rd Earl of Ulster WILLIAM De BURGH [1] b. 17 Sep 1312 d. 6 Jun 1333
- MAUD PLANTAGENET b. 1298 d. 5 May 1377
- 2 Lady ELIZABETH De BURGH [1.1] b. 6 Jul 1332 d. 10 Dec 1363
- ELYAS De RICHMOND b. 1327 d. 1399
- 3 THOMAS RICHMOND [1.1.1] b. 1384 d. 1415
- ELIZABETH NICHOLS b. 1390 d. 1422
- 4 WILLIAM RICHMOND, I [1.1.1.1] b. 1410 d. 1441
[ =>]
- 4 WILLIAM RICHMOND, I [1.1.1.1]
- 3 THOMAS RICHMOND [1.1.1]
- Duke of Clarence, Prince of England Lionel of Antwerp Plantagenet b. 29 Nov 1338 d. 07 Oct 1368
- 3 Elizabeth Plantagenet [1.1.2] b. Yes, date unknown d. Yes, date unknown
- + William Mohun b. Yes, date unknown d. Yes, date unknown
- + William Mohun b. Yes, date unknown d. Yes, date unknown
- 3 Countess of Ulster and March Phillippa Plantagenet [1.1.3] b. 16 Aug 1355 d. 07 Jan 1377
- 3rd Earl of March Edmund Mortimer b. 01 Feb 1352 d. 27 Dec 1381
- 4 Lady Alice Mortimer [1.1.3.1] b. Abt 1368
[ =>]
- 4 Elizabeth Mortimer [1.1.3.2] b. 12 Feb 1370 d. 20 Apr 1417
- 4 Agnes Mortimer [1.1.3.3] b. 1372 d. 20 Apr 1417
[ =>]
- 4 4th Earl of March Roger Mortimer [1.1.3.4] b. 11 Apr 1374 d. 20 Jul 1398
[ =>]
- 4 Phillippa Mortimer [1.1.3.5] b. 21 Nov 1375 d. Abt 15 Sep 1400
- 4 Sir Edmund Mortimer [1.1.3.6] b. 09 Nov 1376 d. 1409
- 4 John Mortimer [1.1.3.7] b. Abt 1378 d. 1423
- 4 Lady Alice Mortimer [1.1.3.1]
- 3 Elizabeth Plantagenet [1.1.2]
- 2 Lady ELIZABETH De BURGH [1.1]