This Galeazzo married Beatrice d' Este, the widow of Nino di Gallura, of whom Dante speaks in the eighth canto of the Purgatory, and had by her a son named Azzo.

Azzo bought the city, together with the title of Imperial Vicar, from the same Louis who had imprisoned his father.[2] When he was thus seated in the tyranny of his grandfather, he proceeded to fortify it further by the addition of ten Lombard towns, which he reduced beneath the supremacy of Milan.

At the same time he consolidated his own power by the murder of his uncle Marco in 1329, who had grown too mighty as a general.

Giovio describes him as fair of complexion, blue-eyed, curly-haired, and subject to the hereditary disease of gout.[3] Azzo died in 1339, and was succeeded by his uncle Lucchino.

In Lucchino the darker side of the Visconti character appears for the first time.