Given the task definition and input, reply with output. Generate a correct and concise answer for the question based on the words in the context.

Context : Catherine of Lancaster (Castilian: Catalina; 31 March 1373 -- 2 June 1418) was Queen of Castile as the wife of King Henry III of Castile.
Question : What is Catherine of Lancaster's spouse's name?
Henry III of Castile