In 1418, the Duke Albert V of Austria transferred it to the German-speaking Benedictine monks from the Melk Abbey during the Melker Reform initiated after the Council of Constance.

Irish missionaries out of monasteries in Ireland and Scotland (Iro-Schotten, Hiberno-Scottish) were instrumental in the spread of Christianity in Continental Europe during the Middle Ages.

This Irish monk of royal lineage killed at Stockerau while on pilgrimage to Jerusalem was patron saint of Austria until 1663.

Restorations were completed by 1449 but poorly done, due to lack of money, and on 21 May 1634, the roof collapsed in full view of Ferdinand II, Holy Roman Emperor.

[citation needed] The collapse of the tower, struck by a lightning bolt in 1638, was seized as an opportunity to completely rebuild the church in Baroque style.