Humbert IV was a notable figure in the history of the House of Savoy, serving as the Count of Savoy from 1051 until his death in 1103. He was the son of Amadeus II and played a crucial role in expanding the influence of the Savoy dynasty during the early medieval period. His reign was marked by territorial expansion and the establishment of important alliances. Humbert IV is often remembered for his efforts in consolidating power in the region, which laid the groundwork for the future growth of the Duchy of Savoy. His leadership contributed to the development of the Savoy region, making it a significant political entity in medieval Europe.