Biography
Blanche Plantagenet of Lancaster was born 25 March 1345 to Henry of Grosmont, 1st Duke of Lancaster (c1310-1361) and Isabella de Beaumont (c1320-1361) and died 12 September 1369 Bolingbroke Castle of unspecified causes. She married John of Gaunt, 1st Duke of Lancaster (1340-1399) 19 May 1359 JL Queens Chapel in Reading, Berkshire, England, United Kingdom.
Children
| Name | Birth | Death | Joined with |
| Philippa of Lancaster (1360-1415) | 31 March 1360 Leicester Castle, Leicester, Leicestershire, England, United Kingdom | 19 July 1415 Odivelas, Portugal | John I of Portugal (1357-1433) |
| John of Lancaster (1362-1362) | |||
| Elizabeth of Lancaster (1363-1425) | 1363 | 24 November 1425 Burford, Shropshire, England, United Kingdom | John Hastings, 3rd Earl of Pembroke (1372-1389) John Holland, 1st Duke of Exeter (c1352-1400) John Cornwall, 1st Baron Fanhope (c1364-1443) |
| Edward of Lancaster (1365-1365) | |||
| John of Lancaster (1366-1366) | |||
| Henry IV of England (1367-1413) | 3 April 1367 Bolingbroke Castle, Lincolnshire, England, United Kingdom | 20 March 1413 Westminster Abbey, London, England, United Kingdom | Mary de Bohun (c1368-1394) Joanna of Navarre (1370-1437) |
| Isabel of Lancaster (1368-1368) | |||
Footnotes (including sources)
| ‡ General |
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