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 in Bolingbroke Castle of unspecified causes. She married John of Gaunt, 1st Duke of Lancaster (1340-1399) 19 May 1359 JL at Queens Chapel in Reading, Berkshire. Notable ancestors include Henry II of England (1133-1189), William I of England (1027-1087), Charlemagne (747-814), Hugh Capet (c940-996), Alfred the Great (849-899). Ancestors are from the United Kingdom, France, Germany, Russia, Ukraine, Spain, Belgium, the Netherlands, Portugal, England, Italy, Turkey, the Byzantine Empire, Sweden.


Offspring of Blanche of Lancaster and John of Gaunt, 1st Duke of Lancaster (1340-1399)
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, King 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 Plantagenet (1368-1368)

Common ancestors of Blanche of Lancaster (1345-1369) and John of Gaunt, 1st Duke of Lancaster (1340-1399)

  1. Alfonso IX, King of León (1171-1230)
  2. Berenguela of Castile (1180-1246)
  3. Blanche of Artois (1248-1302)
  4. Béatrice de Savoie (1205-1266)
  5. Béatrix de Savoie (1198-1266)
  6. Henry III of England (1207-1272)
  7. Isabelle of Angoulême (1186-1246)
  8. John of England (1167-1216)
  9. Mathildis van Brabant (1224-1288)
  10. Ramon Berenguer IV de Provence (1195-1245)
  11. Robert Capet (1216-1250)
  12. Éléonore de Provence (1223-1291)