The pataria was an eleventh-century Catholic movement focused on the city of Milan in northern Italy, which aimed to reform the clergy and ecclesiastic government within the city and its ecclesiastical province, in support of papal sanctions against simony and clerical marriage. Those involved in the movement were called patarini, patarines or patarenes, a word perhaps chosen by their opponents, the etymology of which is uncertain. The movement, associated with urban unrest in the city of Milan, is generally considered to have begun in 1057 and ended in 1075. The movement failed to achieve its goal.