George Bender b. abt 1815 Juniata Co, PA?

I'm looking for info on my third great-grandfather, George Bender who was born abt 1815 and probably died between 1870 and 1880.(Note that these dates are from census records which may not be from the right family, so they may be incorrect).On census records that I believe to be his family, his wife is listed as Nancy.However, I obtained an obituary of one of his sons and the mother is said to be Mary Moist.Known son is Robert M. Bender b. June 1859 in Spruce Hill Twp, Juniata Co, PA and died 21 Nov 1936 in Lewistown, Mifflin Co, PA.Possible other children are Fanny, Jane, Rebecca J., George, and David.Robert is said to be the last of his immediate family.Any help would be greatly appreciated.Thank you.