Count Baldwin IV of Hainaut was a nobleman who lived during the 12th century. He was born around 1160 and became the Count of Hainaut in 1171. Baldwin was known for his efforts to strengthen his territory and for his involvement in the politics of the region, particularly in relation to the Holy Roman Empire and neighboring territories. Baldwin IV was also a member of the House of Flanders, which played a significant role in the history of medieval Europe. His reign was marked by alliances and conflicts with other noble families, as well as his attempts to maintain the independence of Hainaut amidst the shifting power dynamics of the time.