County of Maurienne

The county was bestowed upon Humbert the White-Handed in 1032 for his assistance in Conrad the Salian's Italian campaigns against Aribert, archbishop of Milan.

Maurienne continued to be noted in the formal titles of the Sardinian and Italian kings.

During the unification of Italy, however, the Maurienne Valley itself was ceded to Napoleon III's France, where it now forms the commune of Saint-Jean-de-Maurienne.

Subordinate to the counts were hereditary viscounts at Aiguebelle and La Chambre, who held the power of low justice over their subjects.

The counts also built a castle Hermillon, from which their castellans could monitor events in Saint-Jean-de-Maurienne, where the bishop held secular authority.