The Marianist Family is a group of four Roman Catholic organizations which trace their origins to the Blessed William Joseph Chaminade and Mother Adèle de Batz de Trenquelléon. The Family's four branches are the Society of Mary (Marianists) (S.M.), a religious institute of priests and Religious Brothers; the Daughters of Mary Immaculate (F.M.I.), a religious institute of Religious Sisters; the Alliance Mariale (A.M.), an historically all-female secular institute, composed of laypeople, who "dedicate their lives to God by taking vows while living in the world"; and the Marianist Lay Communities (M.L.C.), a private association of the faithful, including both men and women.