Lawrence Lewis (1767–1839)
Lawrence Lewis and Bushrod Washington were first cousins. They both served as executors of George Washington's estate.
Lawrence Lewis, a son of Elizabeth Washington Lewis and nephew of George Washington, was born on 4 April 1767 at Kenmore plantation in Fredericksburg, Virginia. His first prominent role was as General Daniel Morgan's aide-de-camp in western Pennsylvania during the Whiskey Rebellion. Beginning in 1797, Lewis assisted his uncle with the management of Mount Vernon.
"Lawrence Lewis," Digital Encyclopedia of George Washington (George Washington’s Mount Vernon).
"Lewis, Lawrence (1767–1839)," in Holly C. Shulman, ed., The Dolley Madison Digital Edition.
"From George Washington to Burgess Ball, 21 July 1793," Founders Online, National Archives, https://founders.archives.gov/documents/Washington/05-13-02-0174. [Original source: The Papers of George Washington, Presidential Series, vol. 13, 1 June–31 August 1793, ed. Christine Sternberg Patrick. Charlottesville: University of Virginia Press, 2007, pp. 257–259.]
"To George Washington from Lawrence Lewis, 24 July 1797," Founders Online, National Archives, https://founders.archives.gov/documents/Washington/06-01-02-0227. [Original source: The Papers of George Washington, Retirement Series, vol. 1, 4 March 1797 – 30 December 1797, ed. W. W. Abbot. Charlottesville: University Press of Virginia, 1998, p. 270.]
"From George Washington to Lawrence Lewis, 20 September 1799," Founders Online, National Archives, https://founders.archives.gov/documents/Washington/06-04-02-0263-0001. [Original source: The Papers of George Washington, Retirement Series, vol. 4, 20 April 1799 – 13 December 1799, ed. W. W. Abbot. Charlottesville: University Press of Virginia, 1999, pp. 311–315.]
Alexandria Gazette (VA), 23 November 1839, page 3, column 4 (Newspapers.com).
Lawrence Lewis at Early Colonial Settlers of Southern Maryland and Virginia's Northern Neck Counties.
Major Lawrence Lewis Sr. at Find a Grave.
Lawrence Lewis at FamilySearch.