House of Sforza
The Crown of Aragon inherited by Charles included the Kingdom of Naples, the Kingdom of Sicily and the Kingdom of Sardinia. As Holy Roman Emperor, Charles was sovereign in several states of northern Italy and had a claim to the Iron Crown of Lombardy (obtained in 1530). The Duchy of Milan, however, was under French control. France took Milan from the House of Sforza after victory against Switzerland at the Battle of Marignano in 1515.