. William Kerr (1763–1824), Earl of Ancram; Dugald Stewart, Scottish philosopher and professor at the University
of Edinburgh (The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom,
Extant, Extinct, or Dormant by G[eorge] E[dward] C[okayne],
ed. Vicary Gibbs and others, London, 1910–1959, 8:154–155; Benjamin Vaughan to
, 8 Aug.
, Adams Papers