Alfonso, King of Castile: A Tragedy in Five Acts is a play written by Matthew Gregory Lewis in 1801. The play is set in medieval Spain and tells the story of King Alfonso and his love for a woman named Leonora. Despite being married to Queen Constance, Alfonso becomes infatuated with Leonora and begins to neglect his duties as king. This leads to a series of tragic events, including the death of Queen Constance and the eventual downfall of Alfonso's...