I assume you have seen the bio of this family in Montgomery's history of Berks County. You can find it online at http://berks.pa-roots.com/. (Click on "Montgomery Project" at left, then "go to the indexes," then navigate to the Eisenbrown surname.

Good luck!

(BTW, hope you got to see "Stone Soldiers," the recently aired documentary on the monuments at Gettysburg. See http://www.nps.gov/gett/parknews/stone-soldiers.htm for info.)