Amadeus VIII, nicknamed the Peaceful, was Count of Savoy from 1391 to 1416 and Duke of Savoy from 1416 to 1440. He was the son of Amadeus VII, Count of Savoy and Bonne of Berry. He was a claimant to the papacy from 1439 to 1449 as Felix V in opposition to Popes Eugene IV and Nicholas V.

The House of Savoy is an Italian royal house that was established in 1003 in the historical Savoy region. Through gradual expansion, the family grew in power from ruling a small Alpine county north-west of Italy to absolute rule of the Kingdom of Sicily from 1713 to 1720, when they were handed the island of Sardinia, over which they would exercise direct rule from then onward.