After moving to New York City, the couple had two sons, Martin W. Littleton, Jr. and Douglas Marshall Littleton. Martin Littleton Jr., like his father, became an attorney and worked as a prosecutor and defense counsel.
After settling in New York City, the family welcomed two sons, Martin W. Littleton Jr. and Douglas Marshall Littleton, both of whom pursued careers in law, with Martin mirroring his father's path as an attorney and working as a prosecutor and defense lawyer.