I searched at Wash DC DAR Library and my local genie library's PA Archives - could not find proof they were b. Germantown. I did find a court list where JC Hesser purchased a book from a forfeited estate in 1778 in Germantown, Philadelphia Co, PA. That establishes a residence, at least at that time. The following year, he paid tax in Loudoun Co, VA. Kids were most likely b. PA.