When Silas Spalding was born on 5 May 1772, his father, Dyer Spaulding, was 39 and his mother, Elisabeth Cady Parkhurst, was 37. He married Theodocia Holton on 29 January 1799, in Cornish, Sullivan, New Hampshire, United States. They were the parents of at least 2 sons and 2 daughters. He registered for military service in 1812. He died on 20 September 1844, in Cornish, Sullivan, New Hampshire, United States, at the age of 72, and was buried in Trinity Cemetery, Cornish, Sullivan, New Hampshire, United States.