Italian dynasty of rulers and patrons. As Lords and later Dukes of Milan, they dominated the politics of North Italy from the mid-14th century to the mid-15th, when the related sforza dynasty succeeded to the duchy. From 1311 Matteo I Visconti (d 1322) held the joint offices of Captain General and Imperial Vicar of Milan and gained control of most of western Lombardy. In 1327 his son Galeazzo I Visconti (reg 1322–8) was expelled from Milan by Ludwig of Bavaria. Galeazzo’s son Azzo Visconti recovered the Imperial Vicariate in 1329 and subsequently regained control of the surrounding cities. Azzo was succeeded by his uncles Lucchino Visconti (reg 1339–49) and Giovanni Visconti, Archbishop of Milan (reg 1349–54).