Cymbeline (pronounced /'s?mb?li?n/) is a play by William Shakespeare, based on legends concerning the early Celtic British King Cunobelinus. Although listed as a tragedy in the First Folio, modern critics often classify Cymbeline as a romance. Like Othello, Measure for Measure, and The Winter's Tale, it deals with the themes of innocence and jealousy. While the precise date of composition remains unknown, the play was certainly produced as early as 1611.