When Moses Hadley was born on 1 May 1769, in Goffstown, Hillsborough, New Hampshire, British Colonial America, his father, Amos Hadley, was 29 and his mother, Dorothy Sargeant, was 28. He married Mary Martin on 24 March 1793, in Goffstown, Hillsborough, New Hampshire, United States. They were the parents of at least 5 sons and 2 daughters. He died on 20 June 1856, in Canaan, Grafton, New Hampshire, United States, at the age of 87, and was buried in Wells Cemetery, Canaan, Grafton, New Hampshire, United States.