When Erastus S. Cone was born on 23 March 1798, in Westminster, Windham, Vermont, United States, his father, John Cone, was 27 and his mother, Rebecca Sage, was 22. He married Nancy T. Thomas on 16 July 1820. They were the parents of at least 1 son and 6 daughters. He died on 14 April 1869, in Milan Township, Monroe, Michigan, United States, at the age of 71, and was buried in Rice Cemetery, Cone, Monroe, Michigan, United States.