1900 Federal Census for Union, Wayne, Iowa ED 153 p 4B:
Mary O. Davis, age 2 (Sep 1897) born in IA
1910 Federal Census for Union, Wayne, Iowa ED 172 p 6B:
Mary O. Davis, age 12, born in IA
Father:James Calvin DAVIS (b. 20 MAR 1863, Bethlehem, Wayne Co, IA - d. 16 JUL 1951, Chariton, Iowa) Mother:Mary Ellen "Mamie" MUMMA (b. 30 NOV 1873, Salem Twp., Tuscarawas Co., OH - d. 1962)