Amadeus III of Savoy was a notable nobleman who lived during the 12th century, serving as the Count of Savoy from 1103 until his death in 1148. He was the son of Count Humbert II of Savoy and played a significant role in expanding the influence of the House of Savoy in the region. His reign was marked by territorial expansion and the establishment of important alliances. Amadeus III is also known for his contributions to the development of the Savoyard state, strengthening its political and economic foundations. He was involved in various military campaigns and diplomatic efforts, which helped to solidify the power of his lineage in the face of regional challenges.