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| Catherine of Lancaster | |
|---|---|
 | |
| Queen consort of Castile and León | |
| Tenure | 9 October 1390 – 25 December 1406 |
| Born | 31 March 1373[1] Hertford Castle, Hertfordshire, Kingdom of England |
| Died | 2 June 1418 (aged 45) Valladolid, Castile and León |
| Burial | Cathedral of Toledo, Castile-La Mancha |
| Spouse | Henry III, King of Castile |
| Issue | John II, King of Castile Catherine, Duchess of Villena Maria, Queen of Aragon |
| House | Lancaster |
| Father | John of Gaunt, 1st Duke of Lancaster |
| Mother | Constance of Castile |
Catherine of Lancaster (Castilian: Catalina; 31 March 1373[1] – 2 June 1418) was Queen of Castile by marriage to King Henry III of Castile. She governed Castile as regent from 1406 until 1418 during the minority of her son.
Queen Catherine was the daughter of John of Gaunt, 1st Duke of Lancaster, and his second wife, Constance of Castile (the daughter and heir of King Peter of Castile, who died at the hands of his half brother Henry II). She was born in Hertford Castle, her father's chief country home, on 31 March 1373.[1] Catherine became Queen of Castile through her marriage to Henry III.