ANTONIO, brother of Giuliano, attracted by his success, likewise became an architect. Besides converting Hadrian's mausoleum at Rome into its present form of the Castle of St Angelo, and erecting several fortresses for Pope Alexander VI., he likewise built several churches, of which that of the Madonna at Montepulciano is considered the best specimen of his art. He died in 1534, and was interred beside his brother Giuliano, in the burying-ground of the Giamberti family, in the church of Santa Maria Novella.