Robert Stewart, also known as the 2nd Marquess of Londonderry, was a prominent British politician and landowner in the 19th century. Born in 1793, he played a significant role in the British Parliament and was known for his involvement in various political issues of his time, including Irish affairs. Stewart was also a notable figure in the Napoleonic Wars, serving in the military before transitioning to a political career. He was a member of the Tory Party and held various titles throughout his life, contributing to the political landscape of Great Britain during a period of significant change.