The Italian campaigns of the Holy Roman Emperors decreased, but the Kingdom did not become wholly meaningless. In 1310 the Luxembourg King Henry VII of Germany with 5,000 men again crossed the Alps, moved into Milan and had himself crowned with the Iron Crown of Lombardy, sparking a Guelph rebellion under Lord Guido della Torre. Henry restored the rule of Matteo I Visconti and proceeded to Rome, where he was crowned Holy Roman Emperor by three cardinals in place of Pope Clement V in 1312. His further plans to restore the Imperial rule and to invade the Kingdom of Naples were aborted by his sudden death the next year.