Hi Doug,
I trust you're referring to Merzen in the district of Osnabrueck, right?
If so, contact Herbert Juling - herbert(at)juling.de
and/or
first visit his list of people/names at
He has the family names "Woltering" as well as "Haar" in his database.
The people with these surnames mentioned on his web site are not from
Merzen (as far as I've seen so far) but from several villages next to
it. So maybe he's able to provide help right out of the box. 
Best wishes,
Vera Nagel
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