Patarine, member of a medieval group of lay craftsmen, tradesmen, and peasants organized in Milan about 1058 to oppose clerical concubinage and marriage; the group later widened its attack to oppose generally the papacy’s moral corruption and temporal powers. The Patarine movement was so called because, under the leadership of Arialdus (Arialdo), a deacon of Milan, its members used to assemble in the Pataria, or ragmen’s quarter of the city (pates being a dialectal word for “rag”). Viewed by the church as heretical, the Patarines, though short-lived in terms of organized activities, became an impetus for a large number of religious-reform movements that arose during the decline of the feudal system and the beginnings of the aspirations to power of the peasant and middle classes.
In the 13th century the name was appropriated by the Cathari, who said it came from pati (“to suffer”), because they endured hardship for their faith.