Caroline Douglas Marchioness of Queensberry, and Irish nationalist benefactor (1821–1904) Parents Alice Hugh Massey O'Donnell Sir William Clayton, 5th Baronet Children Lord Archibald Douglas Gertrude Stock Florence Dixie Lord James Douglas Lord Francis Douglas John Douglas, 9th Marquess of Queensberry Siblings Henry Hugh O'Donel Clayton William Capel Clayton Partners Archibald Douglas, 8th Marquess of Queensberry