Sauer and Hoffher Lines

Received a message in response to the family tree I created at Ancestry.com regarding Corinne's Sauer and Hoffher lines.  We've begun to exchange correspondence, and though the researcher is not related, he's been helping a fried of his daughter who is related.

Corinne's ancestors are George F. Sauer and Agnes Barbara Hoffher.  George was born May 9, 1838 in either Pennsylvania or Indiana, the son of Louis and Frederika Sauer.  Barbara was born August 23, 1840 to as of yet unknown parents.  They were married April 8, 1860 in Vanderburgh County, Indiana and raised 8 children.  

Corinne's line comes down through son Edward J. Sauer, while the friend comes through Otto William Sauer.  

A pedigree chart submitted suggests that Barbara's parents were Johann Hoffher Sr. and Frederika _____ of Armstrong Township, Vanderburgh County, Indiana.