Foscari, Francesco, Doge of Venice, born in the latter part of the 14th century, was elected in the 15th century. He waged successful war,. against the Turks, and against Visconti, Duke of Milan. In 1443 he was in league with Sforza, Duke of Milan, against Alfonso of Naples and the Pope, and his three sons died in the service. His fourth son, Jacopo, was accused of taking bribes and of treachery, and was tortured and exiled. Having escaped, he was sent back, and the father was deposed through the machinations of a rival, and died broken-hearted. Their history forms the subject of Byron's tragedy, The Two Foscari.