Baldwin III of Hainaut was a notable medieval ruler who reigned as Count of Hainaut from 1171 until his death in 1195. He was part of the House of Flanders and played a significant role in the political landscape of the Low Countries during his time. His leadership helped to strengthen the region's influence and stability. In 1190, Baldwin III became the Count of Namur through marriage, further expanding his territories. He was known for his diplomatic skills and efforts to maintain peace among the various noble families in the region, which contributed to the prosperity of his lands.