Cymbeline - William Shakespeare - Cymbeline, also known as Cymbeline, King of Britain or The Tragedy of Cymbeline, is a play by William Shakespeare, set in Wales and based on legends concerning the early Celtic British King Cunobeline. Although listed as a tragedy in the First Folio, modern critics often classify Cymbeline as a romance. Like Othello 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.