Capt. Lewis Duvall had a son John and a son Lewis P. Duvall. Lewis P. Duvall was married to Nancy Wiley, not Capt. Lewis. Capt. lewis died in the American Bottom in what is now Illinois in 1808, Illinois became a state in 1812. Oilver P. is the son of Lewis P. and Nancy Wiley. It was John, Capt. Lewis son, who requested the pension for his step mother, Elizabeth Duvall. O.P. was born in 1813, 5 years after his grandfather Captain Lewis, died.