Background
Gretser was born at Markdorf in the Diocese of Constance.
Gretser was born at Markdorf in the Diocese of Constance.
Ingolstadt was the principal scene of his work. Here he taught philosophy for three years, dogmatic theology for fourteen and moral theology for seven years. He gave at least ten hours a day to his studies, which he protracted, at times, till late into the night, in order to devote part of the day to works of charity and zeal.
He was recognized as one of the best controversialists of his time, and was highly esteemed by Pope Clement VIII, Emperor Ferdinand II, and Maximilian I, Elector of Bavaria.
Some of the greatest of his age, such as Cardinal Bellarmine and Markus Welser, corresponded with him and consulted him in their difficulties. He died at Ingolstadt.