Saint Clement Mary Hofbauer CSsR (German: Klemens Maria Hofbauer) (†1820) was a Moravian hermit and later a priest of the Redemptorist congregation. He established the presence of his congregation, founded in Italy, north of the Alps, for which he is considered a co-founder of the congregation. He was known for his lifelong dedication to caring for the poor during a tumultuous period of Europe's history, which left thousands destitute. He worked to care for the Polish people until he was expelled from there and moved to Austria. Hofbauer has been declared a saint by the Catholic Church. Due to his extensive service in that city, he is called the Apostle of Vienna, of which he is a co-patron saint.