The mendicant orders-Augustinians, Carmelites, Dominicans, Franciscans, and several other groups-spread across Europe apace from the early thirteenth century, profoundly influencing numerous aspect of medieval life. But alongside their tremendous success, their members (friars) also encountered derision, scorn, and even violence. Such opposition, generally known as antifraternalism, is often seen as an ecclesiastical in-house affair or an ideological response to the brethren's laxity: both cases registering a moral decline symptomatic of a decadent church. Challenging the accuracy of these...