when did henry iv, holy roman emperor ascend to the throne?
1 April 1084
Henry IV, Holy Roman Emperor
Henry launched a series of military campaigns to Italy, and Clement III crowned him emperor in Rome on 1 April 1084.
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Henry IV, Holy Roman Emperor [SEP] Introduction
Most German and northern Italian bishops remained loyal to Henry and they elected the antipope Clement III. Rudolf of Rheinfelden was killed in battle and his successor, Hermann of Salm, could only exert royal authority in Saxony. From 1081, Henry launched a series of military campaigns to Italy, and Clement III crowned him emperor in Rome on 1 April 1084.