an Italian Jesuit and theologian, was born at Rome in 1570. Urban VIII had a high regard for him, and said publicly that he was worthy. of the honor of cardinal; but Alciati died. Nov. 12,1651, before receiving this honor, and left the materials for a work entitled Historice Concilii Tridentini a Veritatis Hostibus Evulgatce Elenchus. He had undertaken, by. order of the pope, to refute the History of Paolo Sarpi. This material was, after his death, of use to cardinal Pallavicino, who composed a new History of the Council of Trent. See Hoefer, Nouv. Biog. Generale, s.v.