Family: John of Gaunt, 1st Duke of Lancaster / Katherine de Roet Swynford, Duchess of Lancaster (F203)
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 | Edward III, King of England (1312-1377)
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 | Philippa of Hainault, Queen consort of England (1314-1369) |
| Edward, The Black Prince (1330-1376)  |
| Joan of England (1334-1348) |
| Lionel Antwerp, 1st Duke of Clarence (1338-1368) |
| Edmund of Langley, 1st Duke of York (1341-1402) |
| John of Gaunt, 1st Duke of Lancaster (1340-1399)
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| Katherine de Roet Swynford, Duchess of Lancaster (1350-1403) |
| John Beaufort, 1st Earl of Somerset (1373-1410) |
| Lady Joan Beaufort, Countess of Westmoreland (1379-1440) |