With the advent of the monk came the nun. The great Boniface, the apostle of the Germans, with inflexible will and diplomatic shrewdness, availed himself of the especial gifts of woman to aid in subjecting Germany to the Holy See. Not finding sufficient aid in Germany, he fetched women from England. The Anglo-Saxon abbesses, Lioba of Bischofsheim, Thekla of Kitzingen, and Walpurgis of Heidenheim, were of immense utility in his missionary work, and left a saintly memory in Germany. They raised the female priesthood of the nuns to a lofty height, their cloisters were nurseries of culture. Princesses and royal daughters sought the veil as an honor or as a refuge from the trials of their high station. It is true, however, that the monasteries of the nuns did not always maintain their original purity. Not seldom a nun broke her vow and preferred excommunication to a loveless existence. Sometimes the nuns tried to console themselves in the cloister itself for the dreariness of their existence. The Capitularies of Charlemagne inform us of the manner in which vagrant nuns, amorous dwellers in cloisters, offended against religious laws. Sometimes, indeed, the nuns even carried on amours for money, and the natural consequences of the breach of the vows of chastity were removed by crime, while, on the other hand, the chastisements meted out for such crimes were truly barbarous. There are Capitularies that prescribe that nuns' cloisters be not too conveniently near to the monasteries of monks, and others that accurately define the intercourse between clerics and laymen, that set forth the rule that "no abbess should presume to go outside of the monastery without episcopal permission nor permit her subordinate nuns to do so, that they shall not dare to write or send love-songs (_winileodes_);" but it is not less true that _winileodes_ continued to be realistically played in the nunneries and played in earnest. That luxury and high living must have developed in cloisters appears from a capitulary which forbids abbesses to have packs of hounds, and falcons, and hawks, and jugglers; that they shall live "regularly," and that their cloisters should be "rationally" established.