Having realised that the Emperor was unable or unwilling to prevent them they continued to act in open defiance of the /Ecclesiasticam Reservatum/. Where the territories of a Catholic bishop were situated in close proximity to the states of Protestant princes recourse was had to various devices to acquire the lands of the Church. Sometimes the bishop was induced to surrender them in return for a fixed grant or pension, sometimes the chapter was persuaded to elect as bishop some scion of a princely family, who was well-known to have leanings towards Protestantism, and in a few cases the bishops themselves solved the problem by seceding from the Catholic Church while continuing to administer the territories to which their episcopal office was their only title. In this way two archbishoprics and fourteen bishoprics, amongst them being such wealthy Sees as Magdeburg, Bremen, Brandenburg, and Osnabruck had passed into the hands of the Lutherans, and it required a very special effort to prevent two such important centres as Cologne and Aachen from meeting with a similar fate. Gebhard, Archbishop of Cologne, a man of scandalously immoral life, completed his infamous career by taking as his wife one who had been his concubine, announcing at the same time that he had gone over to Calvinism. The chapter of Cologne Cathedral backed by the people took steps to rid themselves of such a superior, and the chapter was supported warmly by both Pope and Emperor. Gebhard was obliged to escape to Strassburg in the cathedral of which he held a canonry, and where he succeeded in creating confusion. Two archbishops claimed the See of Strassburg, one loyal to the Catholic Church and one favouring Protestantism. This disgraceful contention went on for years, till at last the Protestant champion was induced to surrender on the payment of a large composition. The See of Aachen was seized by force in 1581, and was held for fifteen years, at the end of which the Protestants were obliged to abandon their claims.