(1600-1668) Moral theologian, born Notteln, Westphalia; died Munster. He entered the Society of Jesus, c1619 As confessor to Bishop von Galen of Münster, he was instrumental in furthering the growth of spiritual activity of the diocese. His work on moral theology is a classic, and has been used by the leading moralists, among them Saint Alphonsus Liguori, as the basis of their treatises.