I really don't know anything about the APFEL/Apffel surname. I am chasing the HERMANN line. I ran across the following in "Ships Passenger Lists Pennsylvania and Delaware (1641-1825)" by Carl Boyer, 3rd:
27. Margaretha Apfel - daughter of Georg Apfel of Freckenfeld and his wife Anna Catharina Gruber - "wife of Michael Herrman, former citizen at Candel, who went to the New Land" (Document dated 1755), Presumably Michel Hermann, Ship Richard Mary, September 30, 1754.
So you might try looking in Freckenfeld which is near Kandel/Candel.