Among Matthys' most intimate followers was Jan Bockelson, from Leyden. Bockelson was a handsome and striking figure. He was the illegitimate son of one Bockel, a merchant and Buergermeister of Saevenhagen, by a peasant woman from the neighbourhood of Muenster, who was in his service. After Jan's birth Bockel married the woman and bought her her freedom from the villein status that was hers by heredity. Jan was taught the tailoring handicraft at Leyden, but seems to have received little schooling. His natural abilities, however, were considerable, and he eagerly devoured the religious and propagandist literature of the time. Amongst other writings the pamphlets of Thomas Muenzer especially fascinated him. He travelled a good deal, visiting Mechlin and working at his trade for four years in London. Returning home, he threw himself into the Anabaptist agitation, and, scarcely twenty-five years old, he was won over to the doctrines of Jan Matthys. The latter with his younger colleague welded the Anabaptist communities in Holland and the adjacent German territories into a well-organized federation. They were more homogeneous in theory than those of Southern and Eastern Germany, being practically all united on the basis of the Hoffmann-Matthys propaganda. The episcopal town of Muenster, in Westphalia, like other places in the third decade of the sixteenth century, became strongly affected by the Reformation. But that the ferment of the time was by no means wholly the outcome of religious zeal, as subsequent historians have persisted in representing it, was recognized by the contemporary heads of the official Reformation. Thus, writing to Luther under date August 29, 1530, his satellite, Melanchthon, has the candour to admit that the Imperial cities "care not for religion, for their endeavour is only toward domination and freedom." As the principal town of Westphalia at this time may be reckoned the chief city of the bishopric of Muenster, this important ecclesiastical principality was held "immediately of the empire." It had as its neighbours Ost-Friesland, Oldenburg, the bishopric of Osnabrueck, the county of Marck, and the duchies of Berg and Cleves. Its territory was half the size of the present province of Westphalia, and was divided into the upper and lower diocese, which were separated by the territory of Fecklenburg. The bishop was a prince of the empire and one of the most important magnates of North-western Germany, but in ecclesiastical matters he was under the Archbishop of Koeln. The diocese had been founded by Charles the Great.