"Amadeus VIII (4 September 1383 – 7 January 1451) was a Savoyard nobleman, the son of Amadeus VII, Count of Savoy and Bonne of Berry. He ...
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was surnamed the Peaceful. After the death of his father in 1391, his mother acted as a regent, because of his youth. He was a claimant to the papacy from 1439 to 1449 as Felix V in opposition to Eugene IV and Nicholas V, and is considered the last historical antipope." - (en.wikipedia.org 26.09.2020)
