I believe at least some of faithhopecharity's accusations may apply to Paul IV, St. Pius V's predecessor once-removed. We may note that it's Paul IV, not St. Paul IV.
Close. And thanks. My first citation was mistakenly about pius 6 not pius 5. I just posted a note correcting that and it includes a horribly anti- Semitic quote from pius V when he expelled Jewish residents from most of the Papal States, please kindly scroll to that note. Thanks. Also in re your mention of Paul 4, he also like pius v and pius Vi had a seriously bad anti- semitism problem. a: in his bull “Cum nimis absurdum” (July 12, 1555),
Paul 4 renewed all canonical restrictions against the Jews—as those prohibiting their practising medicine for Christian patients needing care, employing Christian servants, and the like—and he restricted them in commerce, forbade them to have more than one synagogue in any city, enforced the wearing of the yellow hat, ordered that no Jew could be addressed as “signor,” and decreed that they should live in a ghetto. The last measure was carried out in Rome — which became the infamous Roman Ghetto of historical record.