When Daniel Eusebius Shaffer was born on 5 May 1856, in Monroe, Tennessee, United States, his father, Isaac Shaffer, was 21 and his mother, Elizabeth Jane Summit, was 19. He married Sarah Alice Moore on 22 December 1882, in Grayson, Texas, United States. They were the parents of at least 3 sons and 5 daughters. He lived in Justice Precinct 7, Grayson, Texas, United States in 1900 and Washington, Oklahoma, United States in 1930. He died on 13 July 1942, in Thackerville, Love, Oklahoma, United States, at the age of 86, and was buried in Mount Zion Cemetery, Thackerville, Love, Oklahoma, United States.