According to my information Joannes Liborius PÖHLER was married to Anna Elisabetha PÖELER. If his wife's surname is in fact PÖELER, then it is quite possible that Liborius had a different surname and adopted hers upon marriage.
I believed he lived in Ostenland, Fürstbistum Paderborn, or a nearby village. I have seen his name spelled Pöeler, Poeler, Pöhler