Nielsen Hayden genealogy
Elizabeth de Roos

( = Descendancy chart to this point,
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- 1 Elizabeth de Roos [1] d. 24 May 1380
William la Zouche b. 1321 d. 23 Apr 1382
- 2 Margery la Zouche [1.1]
d. 18 Oct 1391
Robert de Willoughby b. Between 1348 and 1350 d. 9 Aug 1396
- 3 Thomas Willoughby [1.1.1]
d. Bef 20 Aug 1417
Elizabeth Neville
- 4 John Willoughby [1.1.1.1]
b. Abt 1400 d. 24 Feb 1437 [ =>]
- 4 John Willoughby [1.1.1.1]
- 3 William Willoughby [1.1.2]
b. Abt 1370 d. 4 Dec 1409
- + Joan Holand d. 12 Apr 1434
Lucy le Strange d. Aft 28 Apr 1398
- 4 Margery Willoughby [1.1.2.1]
d. Bef 22 Oct 1452 [ =>]
- 4 Thomas Willoughby [1.1.2.2]
d. Bef 1 Jul 1439 [ =>]
- 4 Margery Willoughby [1.1.2.1]
- + Joan Holand d. 12 Apr 1434
- 3 Thomas Willoughby [1.1.1]
- 2 Margery la Zouche [1.1]