Tostado, Alonso a Spanish prelate, was born at Madrigal in 1400. He studied at Salamanca, and at the age of twenty-two received his degree. He was elected to the chair of theology, and soon gained a wide reputation. In 1431 hew as sent to the Council of Basle, and by some of his utterances attracted the attention and condemnation of the holy see. In 1443 he was ordered to appear before an assembly of theologians at Sienna, and was convicted of unsound doctrine. On his return to Spain, through the intercession of the king, he received the bishopric of Avila, and was also member of the Council of Castile. He died near Avila Sept. 3, 1455. His works are numerous, and a large number were published at Venice, 1547, 24 vols. fol.; they consist of mystical commentaries on the lives of the Bible and on Matthew. Besides these are Comentario sobre Eiusebio (Salamanca, 1506): — Confesionario (Logrofo, 1520). See Viera Clavio, Elogio de Alonso Tostado; Antonio, Bibl. Hist. Vetus. Hoefer, Nouv. Biog. Géneralé, s.v.