Mr. Wren is probably James Wren (d. 1808) of Fairfax County, who supplied the building plans for Pohick Church (SLAUGHTER [1] description begins Philip Slaughter. The History of Truro Parish in Virginia. Edited by Edward L. Goodwin. Philadelphia, 1908. description ends , 70). Mr. Carr is probably either Overton Carr or his father, John Carr (1706–1778), of Bear Castle, Louisa County. Mr. Addison may be Rev. Henry Addison or any one of the three sons of his brother John Addison (1713–1764) of Oxon Hill: Thomas, John, or Anthony Addison.