Thomas I Holland
1314 - 1360 (46 years)(
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- 1 Thomas I Holland [1] b. 1314 d. 26 Dec 1360
- Joan of Kent Plantagenet b. 29 Sep 1328 d. 8 Aug 1385
- 2 2nd Earl of Kent Thomas II Holland [1.1] b. 1354 d. 25 Apr 1397
- Alice of Arundel Fitzalan b. 1352 d. 17 Mar 1416
- 3 4th Earl of Kent Edmund Holland [1.1.1]
- Constance Langley Plantagenet b. 1374 d. 28 Nov 1416
- 4 Eleanor Holland [1.1.1.1] b. 1406
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- 4 Eleanor Holland [1.1.1.1]
- 3 Margaret Holland [1.1.2] b. 1385 d. 30 Dec 1439
- 1st Earl of Somerset John Beaufort b. 1373 d. 16 Mar 1410
- 4 2nd Earl of Somerset Henry Beaufort [1.1.2.1] b. Oct 1401 d. 25 Nov 1418
- 4 Joan Beaufort [1.1.2.2] b. 1404 d. 15 Jul 1445
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- 4 1st Duke of Somerset John Beaufort [1.1.2.3] b. 25 Mar 1404 d. 27 May 1444
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- 4 1st Duke of Somerset Edmund Beaufort [1.1.2.4] b. 1406 d. 22 May 1455
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- 4 2nd Earl of Somerset Henry Beaufort [1.1.2.1]
- 3 Eleanor Holland [1.1.3] b. 1392 d. 18 Oct 1405
- + Earl of March Roger Mortimer b. 11 Apr 1374 d. 15 Aug 1398
- + Thomas Montague
- Edward de Cherleton b. 1371 d. 14 Mar 1421
- 4 Joyce de Cherleton [1.1.3.1]
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- 4 Joyce de Cherleton [1.1.3.1]
- + Earl of March Roger Mortimer b. 11 Apr 1374 d. 15 Aug 1398
- 3 4th Earl of Kent Edmund Holland [1.1.1]
- 2 2nd Earl of Kent Thomas II Holland [1.1]