The Congregation of Marian Fathers of the Immaculate Conception of the Most Blessed Virgin Mary is a fraternal community of consecrated life in the Roman Catholic Church. They are also known for their devotion to Mary Immaculate, dedication to praying for the poor souls in Purgatory, and active service to the Church. Founded in Poland in 1670 by Saint Stanislaus Papczynski, today the Marian Congregation has about 500 priests and brothers who labor in 18 countries, including the USA, Argentina, Belarus, Brazil, Cameroon, Czech Republic, India, Italy, Kazakhstan, Latvia, Lithuania, Philippines, Poland, Portugal, Rwanda, Ukraine, United Kingdom. and Vietnam.