Posted on: BaltimoreCity County Md. Query Forum Reply Here: http://cgi.rootsweb.com/~genbbs/genbbs.cgi/USA/Md/BaltimoreCity/2959 Surname: ------------------------- Message about Rudolph Behrendt. I have Johann Behrendt, Franz Behrendt, and Paul Behrendt all fron Baltimore City, Maryland. I know there are relatives in Wisconsin by the name of Heindorf. Martha Behrendt married in Baltimore to Louis Heindorf and moved to Milwaukee early 1900's.She had 4 children.