Theobald III of Champagne was a nobleman who ruled as Count of Champagne from 1201 until his death in 1253. He was the son of Theobald II of Champagne and Gisela of France, which connected him to the royal family. His reign was marked by efforts to strengthen the county's economy and political influence in the region. Theobald III was also known for his involvement in the Crusades, particularly the Fourth Crusade, which aimed to reclaim Jerusalem. He played a significant role in the politics of France during his time, navigating alliances and conflicts that shaped the landscape of medieval Europe.