Confraternity
A confraternity is normally a Roman Catholic or Orthodox organization of lay people created for the purpose of promoting special works of Christian charity or piety, and approved by the Church hierarchy. An archconfraternity is a "franchise" of confraternities, able to establish different groups using the same names and rules, such as the Confraternities of the Cord, Confraternity of the Rosary and others. Many of these are very widely spread. Especially in the cities of the Middle Ages, confraternities could be important and wealthy institutions for the elite, as in the Scuole Grandi of Venice. The Purgatorial societies and orders of flagellants were other specialized medieval types. The medieval French term puy designated a confraternity dedicated to artistic performance in music, song and poetry; the German meistersingers were similar, though typically imitating trade guilds in form.
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