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Gregory (VIII) (born, Limoges?, Aquitaine—died c. 1140) was an antipope from 1118 to 1121. A Benedictine educated at the abbey of Cluny, he was made bishop of Coimbra, Port., in 1098. While archbishop of Braga, Port. (consecrated 1111), he quarrelled with Archbishop Bernard of Toledo, Castile, and was suspended by Pope Paschal II in 1114. Later he was cleared and became part of the papal court. When the Holy Roman emperor Henry V invaded Italy...