Entry for Friderich Merckel, Hunter Lists 496: "The ancestral home of this family was at 6733 Haßloch . . . The name of the 1st w[ife]/o[f] Friederich Merckel was Anna Barbara, according to the Haßloch registers."
Note: There are no records found giving the name as "Johann Friederich" although it is often erroneously listed as such in online trees, nor has a birth record been found.