I saw your posting to the Nicodemus forum from a couple of years ago.Yes, most of we American Nicodemuses are descended from Johann Henrich Nicodemus of Medenbach b. 1677.Please see my posting to this forum I just made (#172) for more.
I was born in Springfield, Missouri, USA but have lived here in Germany for over 20 years.Much of that time was in Heidelberg, but we now live in the Allgäu.
Ivan Nicodemus also published a second book, "Nicodemus in Germany" in 1998.I find on page 79 a Herborn Nicodemus family:
Henrich Wilhelm Nicodemus b. 10 Feb 1746 in Herborn d. 1 May 1805.He married Anna Susanna Ruppert 20 Jan 1791.She was b. 3 Apr 1770 in Sinner Muhle and d. 21 Aug 1841.They had at least seven children, one of which was Wilhelmina b. 29 Mar 1794in Herborn and 25 Oct 1875 in Herborn.She married Philipp Reucker at forester in Sinn.Are these your folks?