| Male John Gaunt Plantagenet |
| Birth | 6 Mar 1340 | St. Bavon Abbey, Ghent, Flanders |
| Death | 03 February 1399 | Leicestershire, England |
| Burial | London, City of London, Greater London, England |
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| Marriage | ||
| Other Spouse | Katherine Swynford, Duchess of Lancaster | F2163 | |
| Marriage | ||
| Other Spouse | Constance of Castile, Duchess of Lancaster | F3318 | |
| Marriage | 1372 | Roquefort, Landes, Aquitaine, France |
| Father | Edward III of Winsor King of England, Lord of Ireland, Duke of Aquitane, Count of Ponthieu, Lord of Aquitane Plantagenet | F1285 Group Sheet | |
| Mother | Philippa DeHainault | F1285 Group Sheet | |
| Female Blanche of Lancaster |
| Birth | 25 March 1345 | Lincolnshire, England |
| Death | 30 September 1369 | Staffordshire, England |
| Burial | London, City of London, Greater London, England |
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| Father | ||
| Mother | ||
| Female Elizabeth Lancaster |
| Birth | 21 February 1363 | Burford, Shropshire Unitary Authority, Shropshire, England |
| Death | 24 November 1425 | England |
| Burial | Burford, Shropshire Unitary Authority, Shropshire, England |
| Male Henry IV |
| Birth | 3 April 1367 | Old Bolingbroke, East Lindsey District, Lincolnshire, England |
| Death | 21 March 1413 | Westminster, City of Westminster, Greater London, England |
| Burial | Canterbury, City of Canterbury, Kent, England |
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| Spouse | Joan of Navarre, Duchess of Brittany | F2571 | |
| Marriage | ||