His namesake J. S. B. Thompson married his daughter Eliza Byrne Barbour in 1850, worked for various railroads (including the Southern Railway), and continued to exercise political influence (helping Thomas S. Martin win election as U.S. Senator in 1893 and accused of corruption in 1911). His grandson John Strode Barbour became a prominent lawyer, newspaper editor and Culpeper's mayor (although he later moved to Fairfax County, Virginia).
J. S. B. Thompson, after whom his son-in-law married Eliza Byrne Barbour in 1850, worked for various railroads, including the Southern Railway, and maintained political influence, helping Thomas S. Martin win election as U.S. Senator in 1893 and facing accusations of corruption in 1911. His grandson John Strode Barbour became a prominent lawyer, newspaper editor, and mayor of Culpeper before moving to Fairfax County, Virginia.