Robert I of Bar was a nobleman from the House of Bar, born around 1250. He became the Count of Bar in 1302 and was known for his role in the political landscape of medieval France. His reign was marked by efforts to strengthen his territory and maintain alliances with neighboring regions. He was also involved in the conflicts of his time, including the Hundred Years' War. Robert I's lineage continued through his descendants, who played significant roles in the history of Lorraine and France. He passed away in 1324, leaving a legacy that influenced the region's nobility.