Sources:
Sea Islander, “A View of Thomas Heyward, Jr.”, by Robert E. H. Peeples, August 1975, pp. 9-11.
The Revolutionary Soldier 1775-1783, by C. Keith Wilbur, Rowman & Littlefield, Guilford, pp. 10-12, 14, 19, 40-42.
https://www.carolana.com/SC/Revolution/revolution_beaufort.html
https://www.carolana.com/SC/Revolution/revolution_fort_lyttleton_1.html
https://www.carolana.com/SC/Revolution/revolution_fort_lyttleton_2.html
https://www.carolana.com/SC/Revolution/revolution_port_royal_island_1.html
https://www.carolana.com/SC/Revolution/revolution_port_royal_island_2.html
https://www.hussarsaddlery.com/rev-war-american-copy
https://www.nps.gov/parkhistory/online_books/declaration/bio19.htm
https://www.nps.gov/parkhistory/online_books/declaration/bio43.htm