 This was the last notable usage of Imperial power, as such, in Italy.The Austrians retained control of Milan and Mantua, and intermittently, other territories (notably Tuscany after 1737), but the claims to feudal overlordship had become practically meaningless.The imperial claims to Italy remained only in the secondary title of the Archbishop-Elector of Cologne to be "Arch-Chancellor of Italy" and in the formal adherence of Emperor and Diet to various treaties resolving the succession of various northern Italian states which were still considered to be imperial fiefs.