1870 U.S. Census:400 Dora enumerated in the household of her father William Bitler as female, age 1, white, at home, born in Ohio.

1880 U.S. Census:401 Dora enumerated in the household of her father William Bitler as white female, age 11, daughter, single, in school, born in Ohio, father born in Pennsylvania, mother born in Ohio.

1935 Death Certificate:2079 Dora May Martin; place of death, Clay Township, Auglaize County, Ohio; date of death, 27 August 1935; residence, St. Johns, Ohio; female, white, widow; date of birth, 15 March 1869; age 66 years, 5 months, 12 days; occupation, residence, housekeeper, own home; birthplace, St. Johns, Ohio; father, William Bitler, birthplace, Pennsylvania; mother, Rosanna Bechdolt, birthplace, Germantown, Ohio; informant, Mrs. Louis Snyder, Wapakoneta, Ohio; burial, Greenlawn, 29 August 1935.