When Martha Emeline Leete was born on 7 December 1828, in Connecticut, United States, her father, Absalom Leete, was 46 and her mother, Sally Pease, was 35. She married Samuel Nash De Forest on 4 July 1850, in Madison, New Haven, Connecticut, United States. They were the parents of at least 5 sons and 2 daughters. She lived in Madison, New Haven, Connecticut, United States in 1850 and New Canaan, Fairfield, Connecticut, United States in 1860. She died in October 1891, in Connecticut, United States, at the age of 62, and was buried in New Canaan, Fairfield, Connecticut, United States.