King Lear is a tragedy by William Shakespeare, considered to be one of his greatest dramatic masterpieces. The title character descends into madness after foolishly disposing of his estate between two of his three daughters based on their flattery, bringing tragic consequences for all. The play is based on the legend of Leir of Britain, a legendary pre-Roman Celtic king. It has been widely adapted for the stage and motion pictures, and the role of Lear has been coveted and played by many of the world's most accomplished actors.