When Dora Belle Thompson was born on 26 November 1884, in Plainfield, Bremer, Iowa, United States, her father, Ozem Gardner Thompson, was 22 and her mother, Lula Belle Fuller, was 19. She married William Abram Oberdier on 20 December 1904, in Waterloo, Black Hawk, Iowa, United States. They were the parents of at least 1 daughter. She lived in Floyd, Floyd, Iowa, United States in 1925. She died on 19 July 1973, in Marshalltown, Marshall, Iowa, United States, at the age of 88, and was buried in Willow Lawn Cemetery, Plainfield, Bremer, Iowa, United States.