When Mable Sarah Chess was born on 3 October 1886, in Sandy Creek Township, Mercer, Pennsylvania, United States, her father, Alva L Chess, was 25 and her mother, Jennie B McMannus, was 22. She married Lee Roy Beckdol on 28 October 1908, in Mercer, Pennsylvania, United States. They were the parents of at least 2 daughters. She lived in Youngstown, Mahoning, Ohio, United States in 1920 and Sheakleyville, Mercer, Pennsylvania, United States in 1940. She died on 17 August 1951, in Cool Spring, Coolspring Township, Mercer, Pennsylvania, United States, at the age of 64, and was buried in Sheakleyville, Mercer, Pennsylvania, United States.