 He was named novice-master there in 1520, and in 1530 became prior of the Charterhouse of Vogelsang near Jülich, where according to Hartzheim, he was also preacher ("concionator") to the Court of William, Duke of Jülich, and confessor to the duke's mother.Because of bad health in 1534 he had to return to Cologne, where a few years later he was named sub-prior and remained in that office until his death.He was a monk of saintly life, employing all the time he could spare from his duties towards others in prayer, contemplation and writing on ascetical and mystical subjects.