Duke of Montferrat

The Marquises and Dukes of Montferrat were the rulers of a territory in Piedmont south of the Po and east of Turin called Montferrat. The March of Montferrat was created by Berengar II of Italy in 950 during a redistribution of power in the northwest of his kingdom. It was originally named after and held by the Aleramici. In 1574, Montferrat was raised to a Duchy by Maximilian II, Holy Roman Emperor (see Duchy of Montferrat).

In 1536 Charles V, Holy Roman Emperor granted the marquisate, despite competing claims from Savoy and from the Marquis of Saluzzo, to the Gonzagas. This was confirmed in 1559 by the Peace of Cateau-Cambrésis.