As far as I can tell there were none in Madison County, IN. I could not find any Eisenberger or Isenberger who fit Arrillia's description anywhere in the 1880 census.
I did find Adolph and Arrillia Schafer in the 1900 census of Pittsburgh, Allegheny Co., PA. It shows he was born Feb 1868 in PA and she was born Nov 1870 in OH. Their sons N. George was born Dec 1894 in Indiana and Louis in March 1997 also in Indiana.
The 1910 census shows the Schaffer Family in St Clair Twp., Allegheny County. This time the family includes son Charles A. 9, born in PA.