Can anyone give me information about a Catholic church located in the Koblenz or Arzheim area?

I am trying to get a name or location of the Catholic church in that area for geneology family research. All I know is that it was located in Arzheim, Rheinland, Preussia in the 1800's.

There seem to be more than one Arzheims, but I guess the one you are looking for is Arzheim close to Koblenz, heres its website (german only) :
http://www.koblenz-arzheim.de/

However, I do not understand what Preussia is supposed to mean.If you mean Prussia, thats not anywhere near that region.

Arzheim itself, formerly independent, has become a part of Koblenz in the 60s.Koblenz website here (partly english) :
http://www.koblenz.de/touristik_kultur/k...

Found one church in Arzheim called St. Adelgundis or Aldegundis, but no adress, sorry.I also don't know whether thats the only one in Arzheim
Its probably best to inquire with the Koblenz tourist office about that church :
info-hbf@touristik-koblenz.de