Was just browsing some random postings when I came across yours and the comment that Kalisz was part of Prussia until WW I. There is a small village of Kalisz that was in West Prussia but the larger centre you are referring to was in Russian Poland from 1815 through WW I. The eastern boundary of Gubernia Kalisz extended almost all the way to Lodz and included the large town of Poddebice. A short distance NNE of there, near the town of Wartkowice is the village of Gostkow.
There are several Gostkowo in this central region but the only one that fits within 1880s Gubernia Kalisz boundaries is the one I found above. If you input these coordinates on Google Maps [ 51.972271,19.019909 ] it will take you to what is still known today as Stary Gostkow. If you look a little to the west, you will find Wartkowice with Gostkow as a suburb just to the north and Nowy Gostkow a short distance to the south.
I am not familiar with Catholic records for this region but this info should help you to track them down. Looking on an old map of the region, http://www.mapywig.org/m/WIG100_300DPI/P41_S28_OZORKOW_300dp...
I do not see any churches in the immediate vicinity. You might need to check those from Poddebice.