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Inquisition summary

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Below is the article summary. For the full article, see inquisition.
Pius V
Saint Pius V Summary
Saint Pius V ; canonized May 22, 1712; feast day April 30) was an Italian ascetic, reformer, and relentless persecutor of heretics, whose papacy (1566–72) marked one of the most austere periods in Roman Catholic church history. During his reign, the Inquisition was successful in eliminating
Gregory IX consecrating the chapel of St. Gregory, detail of a fresco, 13th century; in the lower church of Sacro Speco, Subiaco, Italy
Gregory IX Summary
Gregory IX was one of the most vigorous of the 13th-century popes (reigned 1227–41), a canon lawyer, theologian, defender of papal prerogatives, and founder of the papal Inquisition. Gregory promulgated the Decretals in 1234, a code of canon law that remained the fundamental source of