MARTZ, Baltzer & John George
The way Fradley wrote inclines me to think that Baltzer is the ancestor.But don't know.It will take an estate or will thing to establish. The use of the same names and two names like John George makes it difficult.
The other thing for me is that a brother of my John Lefever who married Catherine Martz (born 1777) named Jacob Lefevre born 1785 was raised by his "uncle Major Baltzell".
We think he is Charles Baltzel (Balsel) officer in the Revolution, German Batallion, Maryland Line.