Marriage of John of Gaunt
History of England
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| | 1359 | John of Gaunt |  |
| Reading Abbey Gaunt marries his cousin, Blanche of Lancaster, daughter of Henry of Grosmont |
| Reading Abbey John of Gaunt's illegitimate descendants, who ultimately became legitimate by his marriage to Katherine Swynford in 1396, the Beauforts, later married into the House of Tudor, which ascended to the throne in the person of Henry VII |
| 1371 | John of Gaunt |  |
| Marries Constanza of Castile, daughter of King Peter I of Castile |
| On his marriage to Costanza of Castile Gaunt assumes the title of King of Castile and Leon, and insists that his fellow English nobles henceforth address him as 'my lord of Spain' |
| 1397 | John of Gaunt |  |
| From the eldest son, John, comes a granddaughter, Margaret Beaufort, whose son, later King Henry VII of England, would nevertheless claim the throne |
| Maries Katherine and their children, the Beauforts, are 'legitimised' but barred from inheriting the throne |
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