Mary was the daughter of Joseph Mumaw/Mumaugh (b ca 1806 MD) and Catherine McClain. Joseph was the brother of my ancestor, William P. Mumaugh. Catherine died before 1850 (probably in Fairfield Co, OH, no record located) when Joseph and their 7 chidlren were living with assorted families in Fairfield Co. It is thought by some descendants that Joseph went to Darke Co, but no death record has been located. The children scattered, to Pickaway Co, Madison Co IN, and VanBuren Co MI. The family was supposedly Mennonite.
Are you a descendant of Mary S. Mumaugh? I do have more information on her ancestry if you are.