I noticed your exchange about Barbara Garnhart. I just wonder if she is really a Garnhart or is that her married name. I have an Andreis/Andrew Garnand Frederick Co MD 1755 whose name has been spelled many ways including Kernhart. He was married to a Anna Barbara and living in Frederick Co, MD. I have never found anything on them except land purchase in 1762 Frederick Co MD. By deeds I think she died before 1789 and I think he died around 1765.
For everyone working on this, maybe this is a clue or different twist. I have been working on the Garnand line for many years, but never found who Andrew's father is or if he was the one who came to the States first.
If you have any info to help me, please keep in touch.