Florence III, Count of Holland was a nobleman who ruled from 1256 until his death in 1296. He was a member of the House of Avesnes and succeeded his father, William II, Count of Holland. Florence played a significant role in the political landscape of the Low Countries during his reign. During his time as count, Florence III worked to strengthen the power of the countship and improve relations with neighboring regions. He was involved in various conflicts, including disputes with the Duchy of Brabant and the County of Flanders, which shaped the territorial dynamics of the area.