When Guy Harrison Nell was born on 24 February 1889, in Moran, Allen, Kansas, United States, his father, Daniel Charles Nell, was 27 and his mother, Martha May Shupe, was 33. He married Cora Marie Newingham on 29 October 1907, in Galesburg, Knox, Illinois, United States. They were the parents of at least 3 sons and 4 daughters. He lived in Scotland Township, McDonough, Illinois, United States in 1910 and Chalmers Township, McDonough, Illinois, United States for about 10 years. He died on 3 August 1962, in Macomb, McDonough, Illinois, United States, at the age of 73, and was buried in Oakwood Cemetery, Macomb City Township, McDonough, Illinois, United States.