Historically being an antipope didn't mean that you were anti Catholic, it meant you believed yourself to be the true Pope in opposition to the Pope in Rome. https://en.m.wikipedia.org/wiki/Antipope
My fun fact: Some antipopes resided in Avignon France, and a (delicious) wine from that region (allegedly, I'm not a wine guy) is called Châteauneuf-du-Pape (House of the New Pope) for this reason.
My fun fact: Some antipopes resided in Avignon France, and a (delicious) wine from that region (allegedly, I'm not a wine guy) is called Châteauneuf-du-Pape (House of the New Pope) for this reason.