For a portrait miniature by George Engleheart of Helena, Countess of Kingston, and a biographical note, see lot 129.

Edward, Viscount Kingsborough, eldest son of the Earl and Countess of Kingston, was an antiquarian who sought to prove that indigenous peoples of the Americas were a lost tribe of Israel. He published facsimilies of ancient documents and reports by early explorers on early ruins and civilisations. He died before succeeding to his father's title and his young brother, Robert, became 4th Earl of Kingston in 1839. Robert was an Irish peer, Whig politician and served in the British army in occupied France after the fall of Napoleon.