Most Holy Family Monastery

Most Holy Family Monastery is an American sedevacantist traditionalist Catholic organisation, based in Fillmore, New York. The monastery was founded by Joseph Natale in the late 1960s, a Benedictine Catholic lay postulant who had attended the Saint Vincent Archabbey in Westmoreland County, Pennsylvania. Instead of taking vows with them, Natale left and set up his own monastery with a focus on the disabled with himself as Superior, living according to the Rule of St. Benedict. In the mid-1980s it had 10 monks, but by 1994 its numbers had dwindled to 3.

The monastery is not approved by the local Roman Catholic Diocese of Buffalo, and opposes the Second Vatican Council and the New Order of Mass. The monastery explicitly adopted sedevacantism in the 1990s when it came under the leadership of two brothers, (self proclaimed Brother) Michael and Peter (nee Frederick and Robert) Dimond. Under their leadership, the monastery gained a significant online presence promoting sedevacantism and conspiracy theories through its website VaticanCatholic.com and social media.