Mary Page lived with her parents in Clermont County, Ohio.
1850 John Page (age 55) and Rachel Page (age 53) lived in Washington Twp, Clermont County, Ohio, with children Asahel Page (age 25), Mary Ann Page (age 21), Rebecca Page (age 19), Thomas B Page (age 17). 
1853 Miss M Page was a teacher in the Clermont county schools. 
1860 Mary A Page (age 30) lived in Washington, Clermont County, Ohio, at post office Laurel, with John Page (age 65), Rachel Page (age 63), Amanda Light (age 15), Samuel Robins (age 18), Mary C Light (age 10), and John Gain (age 20). 
1870 Mary A Page (age 35, born in Ohio) lived in Washington, Clermont County, Ohio, at post office Point Isabel, with John Page (age 75), Rachel Page (age 73), Amanda Light (age 20), and Mary C Light (age 18). 
Mary Page's death date has been reported as 10 Nov 1912. [We seek a source, or correction, for this date].
 US census, 1850, Reel 0667, Image 515, family 780, [Internet_Archive].
 J. L. Rockey and R. J. Bancroft, 1795 History of Clermont County, Ohio, with illustrations and biographical sketches of its prominent men and pioneers (Philadelphia: Louis H. Everts & Co, 1880), 169, [HathiTrust].
 US census, 1860, [Ancestry_Image].
 US census, 1870, [Ancestry_Image].