His marriage to Elizabeth would also provide him with close family ties to Emperor Frederick I Barbarossa and the Welfs (like Barbarossa and Henry the Lion, Elizabeth was a grandchild of the Welf duke Henry IX of Bavaria).
His union with Elizabeth would establish close familial relationships with Emperor Frederick I Barbarossa and the Welfs (like Barbarossa and Henry the Lion, Elizabeth was a relative of the Welf duke Henry IX of Bavaria).