[1] Around this time, Ringgold became Benjamin Franklin's agent on the Eastern shore, helping him collect debts owed from the Pennsylvania Gazette.
[6][7][8] There, Ringgold would join with business partner, Samuel Galloway III to create one of the largest slave trading enterprises in Maryland history.
[15][17] Ringgold was a leader in the local Sons of Liberty group and supportive of the American Revolution, a sharp contrast to his business partner and close associate Samuel Galloway.
[1] At the time of his death, Ringgold IV owned more than 30,000 acres of property in Maryland's Kent, Frederick, Queen Anne's, and Dorchester counties, as well as several plots in Chestertown.
[8] Ringgold IV's son followed in his father's revolutionary footsteps, attending a number of Conventions representing Kent County.
[20] In 1932, original furnishings, wood and plasterwork was removed from the Ringgold house and installed in situ at the Baltimore Museum of Art.
The museum also holds portraits of Thomas Ringgold IV and his wife Anna, which were painted by Charles Wilson Peale.