Our Wermerskirchen connection

HOORAY! This week, we heard from a descendant of another early settler in the Pierz/Buckman area, namely immigrant Melchior Wermerskirchen's great grandson, whose mom was a Brandl.  (Trying not to use googleable proper names, ya know?)  
Here's the bio printed in the  Clara Fuller's History of Morrison and Todd Counties, Minnesota , in 1915. 

I was hoping the article might have explained where 'Wermers Church' was--maybe a district in or near Cologne?  

THANKS for writing, K!