In the West, the most significant development occurred when the rules for monastic communities were written down, the Rule of St Basil being credited with having been the first. The precise dating of the Rule of the Master is problematic. It has been argued that it antedates the Rule of Saint Benedict created by Benedict of Nursia for his monastery in Monte Cassino, Italy (c. 529), and the other Benedictine monasteries he had founded as part of the Order of St Benedict. It would become the most common rule throughout the Middle Ages and is still in use today. The Augustinian Rule, due to its brevity, has been adopted by various communities, chiefly the Canons Regular. Around the 12th century, the Franciscan, Carmelite, Dominican, Servite Order (see Servants of Mary) and Augustinian mendicant orders chose to live in city convents among the people instead of being secluded in monasteries. St. Augustine's Monastery, founded in 1277 in Erfurt, Germany is regarded by many historians and theologians as the "cradle of the Reformation", as it is where Martin Luther lived as a monk from 1505 to 1511.