Nielsen Hayden genealogy
Isabel de Beaumont

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- 1 Isabel de Beaumont [1] d. Aft 24 Mar 1361
Henry of Grosmont b. 1314 d. 24 Mar 1361
- 2 Blanche of Lancaster [1.1]
b. 25 Mar 1342 d. 12 Sep 1368
John of Gaunt b. Mar 1340 d. 3 Feb 1399
- 3 Philippa of Lancaster [1.1.1]
b. 31 Mar 1360 d. 19 Jul 1415
- + Joao I, King of Portugal b. 11 Apr 1358 d. 14 Aug 1433
- + Joao I, King of Portugal b. 11 Apr 1358 d. 14 Aug 1433
- 3 Elizabeth of Lancaster [1.1.2]
b. Bef 21 Feb 1363
John Holand d. 9 Jan 1400
- 4 Constance Holand [1.1.2.1]
d. 12 Nov 1437 [ =>]
- 4 Constance Holand [1.1.2.1]
- 3 Henry IV, King of England [1.1.3]
b. 1367 d. 20 Mar 1413
Mary de Bohun d. 1394
- 4 Henry V, King of England and lord of Ireland [1.1.3.1]
b. 16 Sep 1386 d. 31 Aug 1422 [ =>]
- 4 Thomas of Lancaster [1.1.3.2]
b. 1387 d. 22 Mar 1421
- 4 Henry V, King of England and lord of Ireland [1.1.3.1]
- 3 Philippa of Lancaster [1.1.1]
- 2 Blanche of Lancaster [1.1]