Family: 1st Duke of Lancaster John of Gaunt Plantagenet / Constance de Castilla (F906)
m. 21 Sep 1371
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Philippa d'Avesnes (1311-1369)
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Duke of Aquitaine Edward Plantagenet (1330-1376)  |
| Isabella Plantagenet (1332-1379) |
| Joan Plantagenet (1335-1348) |
| William Plantagenet (1336-1337) |
| 1st Duke of York Edmund Langley Plantagenet (1341-1402) |
| Mary Plantagenet (1346-1361) |
| Pedro de Castilla, I (1334-1369)
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| Maria Juana de Padilla (1334-1361) |
| Isabel Perez Leon (1355-1392) |
| 1st Duke of Lancaster John of Gaunt Plantagenet (1340-1399)
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| Constance de Castilla (1354-1394)
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