When Clinton Waldo Ellsworth was born on 27 December 1881, in Fairfax, Franklin, Vermont, United States, his father, Valorus Haynes Ellsworth, was 28 and his mother, Lydia E. Kirby, was 28. He married Lizzie Lena Blakely on 19 February 1914, in Fairfax, Franklin, Vermont, United States. They were the parents of at least 1 son and 2 daughters. He died on 26 March 1953, in Cambridge, Lamoille, Vermont, United States, at the age of 71, and was buried in Underhill Flats Cemetery, Jericho, Chittenden, Vermont, United States.