 He died on 23 May 1125 in Utrecht, leaving Matilda in the protection of their nephew Frederick, the heir to his estates, and in possession of the imperial insignia.It is unclear what instructions he gave her about the future of the Empire, which faced another leadership election.Archbishop Adalbert subsequently convinced Matilda that she should give him the insignia, and the Archbishop led the electoral process which appointed Lothair of Supplinburg, a former enemy of Henry, as the new King of the Romans.