• Rev. Samuel Thompson / Janet Holmes
  • Rev. William Thompson (b. May 22, 1735; d. Aug. 16, 1785 Cecil County, Maryland) / Susanna Ross (b. Jan. 17, 1738 New Castle, Pennsylvania (now Delaware); d. March 1, 1801, Carlisle, Pennsylvania)
    • Mary Thompson (Jan. 9, 1765 - Feb. 5, 1826; Cecil County) / Dr. Thomas Brockus Veazey (March 29, 1750 - Feb. 1806; Cecil County)
      • Julianna Ross Veazey (Cecil County) / Dr. Thomas B. (Richard) Savin...(married November 19, 1805)
        • Rebecca Savin (Maryland) / William Donaldson (Maryland)
          • William Donaldson
          • Richard Donaldson
          • Robert Donaldson
          • Rebecca Donaldson
          • Mary Jane Donaldson
          • Sarah Ann Donaldson (Estate: Bohemia Manor, St. Augustine, Cecil County) / John A. Cosden (Elkton, Cecil County)
            • George Washington Cosden (1844-1923; Elkton, Cecil County) / Sarah E. Mackey (1860-1886; Newark, Delaware)
              • Ida Cosden (1886-1927; Cecil County) / Enrico Augusto de Socio (b. 1876, Campobasso, Italy; d. 1929)
                • Giorgio Pasquale de Socio, P.E. (b. 1911, Rome, Itay; d. 1985) / Carolyn Peck (Baltimore)
                  • Robert Cosden de Socio (Baltimore) / Eleanor Arnold (Baltimore)
                    • Michael Robert de Socio (Baltimore)
                    • Mark James de Socio (Baltimore)
                  • George Mackey de Socio (Baltimore)
                    • Linda de Socio (Fairfax, Virginia) / Jon Bock (Fairfax, Virginia)
                      • Ivan Bock (Fairfax, Virginia)
                    • Robyn de Socio (Richmond)
                    • Giorgio de Socio (Raleigh, North Carolina)
                  • Thomas de Socio (Baltimore) / Lucia Schuon
                    • Stepanie de Socio (Fairfax, Virginia)
                    • Anna de Socio (Fairfax, Virginia)
                    • Carolyn de Socio (Fairfax, Virginia)