The Antipope Boniface VII reference article from the English Wikipedia on 24-Apr-2004
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Antipope Boniface VII

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Boniface VII, who attained the papal chair in 974, is sometimes styled an antipope. He is supposed to have put Benedict VI to death. A popular tumult compelled him to flee to Constantinople; but he carried off a vast treasure, and returned in 984 and removed by murder, John XIV, who had been elected in his absence. He died in 985 or 986.

See also: Pope John XV

This article uses text from the 9th edition (1880s) of an unnamed encyclopedia.