so once again I am stuck.
not really. you have a name. if you write to the correct authority you may get the answer you want.
short of the vatican.... write to the office of the head of church in the area you are researching. or failing that.. the office of the head of the church in Poland.
The priest may not have been in residence. You have no idea if he was filling in or not.
edit: filios put it so much better than me