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Who crowned Henry IV Holy Roman emperor in 1084?
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Henry IV
Henry IV, illumination from the manuscript Ekkehardi historia, c. 1113; in possession of Corpus Christi College, Cambridge.
Henry IV was crowned Holy Roman emperor on March 31, 1084, by the antipope Clement III (born Guibert of Ravenna).12
Henry IV had nominated Guibert as pope at a synod in Brixen after his conflict with Gregory VII escalated during the Investiture Controversy. After Henry successfully conquered Rome in March 1084, Guibert was enthroned as Clement III and subsequently performed the imperial coronation.132