who was the first to hold this title after their name?
Saxon king Otto I
Holy Roman Emperor
While earlier Germanic and Italian monarchs had been crowned as Roman emperors, the actual Holy Roman Empire is usually considered to have begun with the crowning of the Saxon king Otto I. 
when did henry iv, holy roman emperor ascend to the throne? 1 April 1084 who was his father? Henry III, Holy Roman Emperor was there any controversy during his crowning? UNANSWERABLE which country did he reign over? Germany, Italy, Burgundy was his father in a conflict with any country? Yes, with Bohemia and Hungary who was this king married to? Agnes of Poitou did she act as regent for any monarch? Yes,  Agnes served as regent on behalf of her young son, Henry IV where does the title given to the roman emperor come from? The title and connection between Emperor and Church continued in the Eastern Roman Empire throughout the medieval period
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Holy Roman Emperor [SEP] Holy Roman Emperors
There was no emperor in the west between 924 and 962. While earlier Germanic and Italian monarchs had been crowned as Roman emperors, the actual Holy Roman Empire is usually considered to have begun with the crowning of the Saxon king Otto I. It was officially an elective position, though at times it ran in families, notably the four generations of the Salian dynasty in the 11th century. From the end of the Salian dynasty through the middle 15th century, the emperors drew from many different German dynasties, and it was rare for the throne to pass from father to son.