1880 U.S. Census:2121 Mary enumerated in the household of her husband Samuel Bitler in Center township, Lyon County, Kansas as a white female, age 26, wife, married, house keeping, born in Ohio, father born in Ireland, mother born in Virginia.

1928 Death Certificate:2088 Mrs. Mary M. Bittler; place of death, Yates Center, Woodson County; date of death, 1 March 1928; female, white, married; husband, Samuel Bittler; date of birth, 5 July 1866; age, 69 years, 7 months, 26 days; occupation, housewife; birthplace, Pennsylvania; father, John J. Ross, born, Pennsylvania; mother, Aseneth Keever, born Pennsylvania; informant, Anna Benett (or Renett, Senett?), Monticella, Indiana; burial, Yates Center, Kansas, 5 March 1928.