She was born in Canoe Township, a daughter of Heinrich & Elisabeth Zinkhan Schmitt, a family from near Neuengronau, Hessen.
She was married twice,1st to George Smith of Young Twp., Jefferson County:
Their Children were: Catherine L. Smith Zimmerman, Theophilus Smith, and Phillip T. Smith
Mary & George were divorced around 1871 and she was married 2nd to Jacob Lewis Dunmire on 29 October 1874, in Indiana County,Pennsylvania. They had several children together and lived in northern Indiana County.