Fascinating information from the article:
"The Marians—officially known as Congregation of Marian Fathers of the Immaculate Conception of the Most Blessed Virgin Mary—were founded by St. Stanislaus Papczynski in 1673 to promote devotion to Immaculate Mary and prayer for the souls in purgatory.
By the early 1900s, the congregation had only one member. Blessed George Matulaitis-Matulewicz revived the community, and today it has 500 members in 19 countries. The congregation, whose spirituality emphasizes fidelity to the Pope and the teachings of the Church, is engaged in a variety of apostolates, including promotion of devotion to the Divine Mercy."