Lotharii Regnum
By the 8th century, the territory that would later become known as Savoy was part of Francia, and at the division of Francia at the Treaty of Verdun in 843, it became part of the short-lived kingdom of Middle Francia. After only 12 years, at the death of Lothair I in 855, Middle Francia was divided into Lotharingia north of the Alps, Italy south of the Alps, and the parts of Burgundy in the Western Alps, inherited by Charles of Provence. This latter territory comprised what would become known as Savoy and Provence. For a short time, this province fell to the Arabs.