| 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 |
|
| Marriage | 1372 | Roquefort, Landes, Aquitaine, France |
| Other Spouse | Katherine Swynford, Duchess of Lancaster | F2163 | |
| Marriage | ||
| Other Spouse | Blanche of Lancaster | F2572 | |
| Marriage | ||
| 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 Constance of Castile, Duchess of Lancaster |
| Male John de Beaufort |
| Birth | 1371 | Lincolnshire, England |
| Death | 16 March 1410 | London, City of London, Greater London, England |
| Burial | Canterbury, City of Canterbury, Kent, England |
| Male Henry Beaufort |
| Birth | 1374 | Departement de la Haute-Loire, Auvergne, France |
| Death | 11 Apr 1447 | wolvesey palace, Winchester, Hampshire, England |
| Burial | Winchester, City of Winchester, Hampshire, England |
|
| Spouse | Alice FitzAlan, Lady | F1287 | |
| Marriage | ||
| Male Thomas de Beaufort |
| Birth | January 1377 | England |
| Death | 27 December 1426 | Greenwich, Royal Borough of Greenwich, Greater London, England |
| Burial | Bury St Edmunds, St Edmundsbury Borough, Suffolk, England |