Amadeus VIII definition of Amadeus VIII in the Free Online Encyclopedia.

Amadeus VIII (ămədē`əs), 1383–1451, count (1391–1416) and duke (from 1416) of Savoy, antipope (1439–49) with the name Felix V. In 1434 he appointed his son regent of Savoy and retired to the hermitage of Ripaille, on Lake Geneva, which he had founded. In 1439 the Council of Basel (see Basel, Council of Basel, Council of, 1431–49, first part of the 17th ecumenical council in the Roman Catholic Church. It is generally considered to have been ecumenical until it fell into heresy in 1437; after that it is regarded as an anticouncil.
..... Click the link for more information. ), which had been pronounced heretical by the pope, declared Eugene IV Eugene IV, 1383–1447, pope (1431–47), a Venetian named Gabriele Condulmer; successor of Martin V. He was of exemplary character and ascetic habits. Gregory XII, his uncle, made him cardinal (1408).
..... Click the link for more information. deposed and elected Amadeus, much respected for his probity, to the papacy. Although a layman, Amadeus reluctantly accepted, believing that he could bring peace to the church. As Felix V, he received only scattered recognition from the secular powers. Following the election of Nicholas V as pope, Felix yielded his claim. He was subsequently made a cardinal. He was the last of the antipopes.