By way of comparison theres an article Coronation of the British monarch and List of coronations of British monarchs the latter giving dates for the coronations of queens as well as kings  Perhaps an article Coronation of the Holy Roman Emperor could be created which would include both details of the coronation itself  and a list of coronations dates officiants and whether they were solitary or with an Empress or of an Empress alone  The Imperial coronation was a remarkably infrequent event I count only twenty times that an Emperor was crowned from  to   only sixteen times by a Pope