Eppes married his first cousin
Mary Jefferson (known as "Polly" in childhood and "Maria" as an adult) on October 13, 1797, at
Monticello. Maria and John had three children: • Unnamed daughter Eppes (December 31, 1799 – January 1800) On April 15, 1809, Eppes married Martha Burke Jones, daughter of
Willie Jones, a prominent North Carolina planter and politician. They had six children. According to her descendants, Hemmings became a
concubine to Eppes in a relationship that began when he was a young widower. They had a son, Joseph, likely named for her brother. She named their daughter Frances, and when she died in 1857, was buried next to John Wayles Eppes in the family cemetery there. ==Political career==