World of HYDE
Discovering our Ancestors and their descendants to all parts of the world. Last updated 15th March 2026.
Family: Henry Plantagenet, 1st Duke Of Lancaster 4th Earl Of Leicester And Lancaster / Isabel De Beaumont (F5158)
m. Abt 1324
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 | Henry Plantagenet, III Earl Of Lancaster (1281-1345)
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 | Maud De Chaworth (1282-1322)
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| Blanche Plantagenet, Of Lancaster (1297-1380)  |
| Isabel Plantagenet, Of Lancaster (1308-1347) |
| Lady Matilda Plantagenet, Countess Of Ulster (1310-1377) |
| Lady Joan Plantagenet, Baroness Of Lancaster (1312-1345) |
| Mary Plantagenet (1320-1362) |
| Henri De Beaumont, 1st Earl Of Buchan (1270-1340)
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| Alice Comyn, Countess Of Buchan (1289-1349)
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| Agnes De Beaumont (1326-1360) |
| Catherine De Beaumont (1310-1368) |
| John De Beaumont, 2nd Baron Beaumont (1317-1342) |
| Isabel De Beaumont (1320-1361)
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| Countess Maud Plantagenet, Of Lancaster (1340-1362) |
| Blanche Plantagenet, Duchess Of Lancaster (1342-1368) |