You and your "Brit" wife ought to discuss sometime about the charism of infallibility given to the popes on behalf of the Church. This special gift, which preserves the pope from teaching any error, in matters of faith and morals, is in effect whenever and only when, a pope teaches on matters of faith and/or morals, "ex cathedra," which means "from the chair," and that is St. Peter's chair, on which Peter sat, during his reign as supreme pastor of Jesus' Church. Right now the only "ex cathedra" teachings are contained within the Catechism of the Catholic Church, which was published in 1994 or 1995, and no pope has added to or taken away from the teachings therein. It is reliable, trustworthy, and authoritative. It is Christian-trademark teaching, unadulterated.
See above, and realize that no sins committed by any popes or any bishops or any priests or any deacons can or does change the infallible teachings of the papacy in matters of faith and morals.