Thank you very much! I guess I should have cast my net further out. The situation was similar for my ancestors while in Russia. My cousin was quite surprised to discover registrations in Taganrog until he found out that was the location of the closest Catholic church.
I will check to see if the films are available. I've had no luck with 8+ parishes in Nordrhein-Westfalen because they always seem to be out on loan. Hopefully I'll find what I'm looking for.