Baron Rossmore, of Monaghan in the County of Monaghan, is a title in the Peerage of Ireland. It was created in 1796 for the soldier Robert Cuninghame, with remainder to his wife Elizabeth's nephews Henry Alexander Jones (the son of Theophilus Jones and Anne Murray, eldest sister of Elizabeth; Henry Alexander Jones died childless before his uncle Lord Rossmore) and Warner William Westenra and Henry Westenra, sons of Henry Westenra and Harriet Murray, youngest sister of Elizabeth. Cuninghame was a General in the Army and served as Commander-in-Chief of Ireland. From January to August 1801 he also sat in the House of Lords as an Irish Representative Peer.