Passavanti, Jacopo an Italian ascetic writer, died June 13, 1357, at Florence, his native place. He belonged to the order of the Dominicans, and rendered his name celebrated in Italy by a treatise entitled Specchio della vesa penitenza, which Leonardi Salviati had printed in 1585. The Academy of La Crusca placed this treatise among the classical works for its excellence of style, and published an edition of it in 1681, which was reproduced in 1725 (Florence, 4to). See Echard et Quetif, Script. ord. Predicat. vol. i.