When Cordelia Wallin was born on 12 May 1866, in Benton, Polk, Tennessee, United States, her father, James Madison Wallin, was 19 and her mother, Eglantine McClary, was 19. She married William Randolph Culpepper on 14 November 1882, in McMinn, Tennessee, United States. They were the parents of at least 4 sons and 4 daughters. She lived in Tennessee, United States in 1870 and Commissioner's Precinct 1, Childress, Texas, United States in 1940. She died on 29 April 1943, in Childress, Childress, Texas, United States, at the age of 76, and was buried in Childress, Childress, Texas, United States.