From The Merriam-Webster Encyclopedia of Literature:
"Play in five acts by William Shakespeare, produced in 1610-11 and published in the First Folio of 1623. One of Shakespeare's final plays, The Winter's Tale is a romantic comedy with elements of tragedy and is noted for its use of realism. The plot is based on the play Pandosto (1588) by Robert Greene. Leontes, the king of Sicilia, jealously believes that his faithful wife Hermione has committed adultery with his old friend Polixenes, the king of Bohemia. After various mishaps, all three are ultimately reconciled after the wedding of Florizel (son of Polixenes) and Perdita (daughter of Leontes and Hermione)."