Iron Crown of Lombardy
In 1004 Frederick supported Henry II of Germany for the Iron Crown of Lombardy, while the magnates elected Arduin. When Henry sent Otto I, Duke of Carinthia, to Italy with a force, Tedald of Canossa and Frederick joined him with armies to secure the Po Valley for Henry. Frederick, with his army, met Henry at Brescia in April, but took no more part in military actions, as he died in June.