His enslaved mother was Ann Dandridge-Costin, whose father is reputed to have been Col. John Dandridge of Williamsburg, Virginia,[3][4] making her the half-sister of Martha Washington.Working with nearly the same group with whom he started other organizations, including fellow hack driver William Wormley (c. 1800–1855) and educator George Bell (1761–1843), Costin served as the Society's vice president through 1826.The law required that free persons of color had: to appear before the mayor with documents signed by three 'respectable' white inhabitants of their neighborhood vouching for their good character and means of subsistence.If the evidence was satisfactory to the mayor, the individuals were to post a yearly $20 bond with a 'good and respectable' white person as assurance of their 'good, sober and orderly conduct,' and to ensure that they would not become public charges or beggars in the streets.[T]o post an annual twenty dollar cash bond and present three references from white neighbors, purportedly to guarantee their peaceful behavior.Costin asked the court to strike the law entirely, saying that Congress could not delegate powers to the city that were unconstitutional, and that "the Constitution knows no distinction of color.[1] He said, "It would seem to be unreasonable to suppose that Congress intended to give the [city] corporation the power to banish those free persons of color who had been guilty of no crime.In 1835, Eliza's brother, George Washington Parke Custis, supported Costin's side business driving a horse-and-buggy taxi.
Gen. George Washington and his family. (George Washington Parke Custis, Gen. George Washington, Eleanore Parke Custis, Martha Washington, William Lee) (NYPL Hades-254222-EM13214)