Possibly a brother or son of Prince Dmitri A. Gallitzin (1734–1803), a man of letters and Russian ambassador at Paris, 1763–1768, and at The Hague, 1770–1782 ( Repertorium der diplomatischen Vertreter aller Länder , p. 354, 359; JA, Diary and Autobiography , 3:3, 15, 29; Eufrosina Dvoichenko-Markoff, “Benjamin Franklin, the American Philosophical Society, and the Russian Academy of Science,” Amer. Philos. Soc., Procs., 91 [1947]:252–253).