Through his eldest son, Lewis V. Morris, he was grandfather to Lewis Morris (1785–1863) and Sabina Elliott Morris (1789–1857). Lewis Morris (b. 1785) was the father of Charles Manigault Morris (1820–1895), a Confederate Officer. Sabina married her first cousin, Robert Walter Rutherfurd (1788–1852), the son of John Rutherfurd and Helena Morris, and was the mother of Lewis Morris Rutherfurd (1816–1892), a pioneering astrophotographer who took the first telescopic photographs of the moon and sun, as well as many stars and planets.