Sarah (Smith) Dabney was the wife of Benjamin Dabney and mother of Philip Augustine Lee Dabney. (Philip is the father of Letitia Dabney Miller [1852-1946], the wife of Thomas Marshall Miller [1847-1920].) Sarah is our great-great-great grandmother.
The Virginia Historical Society lists an image of Sarah with the Macon family, under “Macon: Sarah (Smith) Dabney, 1775-1851” but the image is not on the web, just “in storage, make appointment to view”. It may be a picture of the same painting. So if anyone goes to Richmond, they should look it up.