Roman Catholic? Nazi supporter? Who knew? Just that the Nazi party was the natural and necessary result of the Catholic Church, was actively backed by the Pope, elevated Catholic clerics to high positions(e.g. Msgr. Tiso in Slovakia), and was far more powerful in Catholic Germanophone regions than in Christian ones (being unpopular in the Calvinist Rhineland-Pfalz).
Where in the article does it say this guy was a Roman Catholic?