Prominent Virginia Families Vol II pg 509: Lucy Churchill daughter of Armistead Churchill and Hannah Harrison, his wife, born Jan 1737 or '38 married (12-1756) Col. John Gordon, of Urbana, younger brother of Col. James Gordon, one of the most cultivated men of his times. John Gordon came to---virginia with his brother James about 1738, and was living in Lancaster Co., Jan. 1759. John Gordon and Lucy Churchill, his wife, has issue: James Gordon b. 1759, Hannah Gordon b. 1760, Churchill Gordon B. Feb 10, 1761, John Gordon b. 9-28-1762, died unmarried at a great age; Sarah Gordon b. 6-21-1764, married Kendall Lee. William Gordon b. 8-4-1766 died unmarried. Mary Gordon b. 3-14-1766 died 6-29-1808 married Nathaniel, son of Col. James Gordon. Nathaniel Gordon b. 2-21-1770, Lucy Gordon b. 11-21-1771 married James Gordon Waddel.
NOTE: Mary Gordon seems to have married her first cousin Nathaniel, her father's brother's son.