ca. 1216

[Possible/Probable] Order issued by Pope Honorius III [Present-day Italy] 

Commentary from other sources:
1) “December 22, 1216. Pope Honorius III gave official approval for the Order of Preachers (Dominicans), founded in 1216 by St. Dominic. Its purpose is to convert Muslims and Jews and to put an end to heresy. The Dominicans eventually become the main administrators of inquisitorial trials.”

Austin Cline: “Timeline of Medieval Christianity: 1200 CE- 1300 CE.”