Hamlet, Prince of Denmark, often shortened to Hamlet, is a tragedy written by William Shakespeare at an uncertain date between 1599 and 1602. Set in the Kingdom of Denmark, the play dramatises the revenge Prince Hamlet is instructed to enact on his uncle Claudius. Claudius had murdered his own brother, Hamlet's father King Hamlet, and subsequently seized the throne, marrying his deceased brother's widow, Hamlet's mother Gertrude.