Catherine of Lancaster 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.
- Occupation
- royal consort of Castile and León
- Position held
- queen consort, regent, pretender to the Castilian throne
- Citizenship
- Kingdom of England
- Born
- March 31, 1373
- Died
- June 2, 1418