When did Pope Nicholas V rule the Roman Catholic Church?

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Pope Nicholas V reigned as the head of the Roman Catholic Church from 1447 to 1455. He was elected on March 6, 1447, and served until his death on March 24, 1455.1

It is important to distinguish him from the individual known as Nicholas V who served as an antipope from 1328 to 1330. The latter was an imperial claimant whose authority was not recognized by the Roman Catholic Church.2