After the forces of Henry IV had besieged and occupied Rome, he and Bertha were crowned emperor and empress on 31 March 1084 by Antipope Clement III.
Setelah pasukan Heinrich IV mengepung dan menduduki Roma, ia dan Bertha dimahkotai kaisar dan permaisuri pada tanggal 31 Maret 1084 oleh Antipaus Klemens III.