Family: John of Gaunt (Duke of Lancaster) Plantagenet / Blanche (Countess of Derby) of Lancaster (F39823)
m. 19 May 1359-
Male
John of Gaunt (Duke of Lancaster) Plantagenet
Birth 24 Jun 1340 Ghent 
Death 3 Feb 1398-1399 Leicester Castle Burial Marriage 19 May 1359 Reading Other Spouse Constanza (Constance) Queen of Castile | F39824 Marriage Jun 1371 Roquefort Other Spouse Katherine Swynford Roet | F39825 Marriage 13 Jan 1395-1396 Lincoln Father Edward III King of England | F39814 Group Sheet Mother Phillipa Hainault | F39814 Group Sheet
Female
Blanche (Countess of Derby) of Lancaster
Birth 25 Mar 1341 Death 30 Sep 1369 Bolingbroke, Castle Burial St Paul's Cathedral Father Henry (1st Duke of Lancaster) Plantagenet | F42692 Group Sheet Mother Isabel De Beaumont | F42692 Group Sheet
Male
Henry The IV Plantagenet King of England
Birth 1367 Bolingbrooke Castle, Lincolnshire Death 1413 Westminster Palace Burial Canterbury Cathedral Spouse Mary (of Hereford) De Bohun | F39828 Marriage Spouse Joanne of Navarre | F39829 Marriage 7 Feb 1402-1403
Female
Philippa (of Lancaster) Plantagenet
Birth 31 Mar 1360 Leicester Castle Death 19 Jul 1415 Odivellas, Lisbon (Died Of The Plague) Burial Spouse Jo?o I 'O Falso' King (& Algarve) of Portugal | F39899 Marriage 14 Feb 1386-1387
Female
Elizabeth of Lancaster Plantagenet
Birth 1362 Death Yes, date unknown Burial Spouse John Cornwall | F39902 Marriage Spouse John (3rd Earl of Pembroke, 5th Lord) Hastings | F41352 Marriage Spouse John (1st Duke of Exeter) Holland | F41353 Marriage 24 Jun 1386