Academic studies in Theology, History and Pedagogy; "Staatsexamen" for teaching, Diplom-Pedagoge, PhD and Habilitation (Medieval and Modern Church History);
Institut für Europäische Geschichte Mainz (1980-2007);
Professor for Church History at the Phil.-Theol. School Hennef (1984-1996) and since 1996 at the Theological Faculty of Sankt Augustin, also apl. Professor at the University of Mainz.
Member of various scientific organisations; member of the scientific advisory board of the Magazine „Theologie der Gegenwart“ (University of Erfurt).