– A cardinal deacon, he ordered the murder of his predecessor, Benedict VI, and was installed by Crescentius I.
– Later, however, he was expelled at the behest of Otto II, the Holy Roman emperor, and was replaced on the papal throne by Benedict VII.
974-984 – He served as pope, or antipope.
– He owed his rule to the support of the Crescentii, a powerful and unscrupulous Roman family.
984 – They summoned Boniface from his refuge in Constantinople, where he had fled with the church treasury; on his return he imprisoned, and presumably murdered, John.
985 – A reign of intrigue ensued, which ended with Boniface’s murder by a vengeful Roman mob on July in Rome, Italy.