Twelfth Night, or What You Wil is a comedy by William Shakespeare, believed to have been written around 1601–02 as a Twelfth Night's entertainment for the close of the Christmas season. The play centres on the twins Viola and Sebastian, who are separated in a shipwreck. Viola (who is disguised as a boy) falls in love with Duke Orsino, who in turn is in love with the Countess Olivia. Upon meeting Viola, Countess Olivia falls in love with her thinking she is a man. The play expanded on the musical interludes and riotous disorder expected of the occasion, with plot elements drawn from the short story "Of Apollonius and Silla" by Barnabe Rich, based on a story by Matteo Bandello. The first recorded performance was on 2 February 1602, at Candlemas, the formal end of Christmastide in the year's calendar. The play was not published until its inclusion in the 1623 First Folio. - Summary by Wikipedia Sonia (Kitty) -- SEBASTIAN, brother to Viola,SIR ANDREW AGUECHEEK,VIOLA LindaB -- ORSINO, Duke of Illyria.MARIA, Olivia's waiting woman. John Farrell -- FABIAN, servant to Olivia Tony Addison (Adonis) -- ANTONIO, a sea captain, friend to Sebastian,VALENTINE, gentleman attending on the Duke,FESTE, a clown, servant to Olivia,OLIVIA, a rich countess John Burlinson -- A SEA CAPTAIN, friend to Viola,CURIO, gentleman attending on the Duke,SIR TOBY BELCH, uncle to Olivia,MALVOLIO, steward to Olivia,Two Officers,Servant