The Order of St. Augustine, with fewer than 3,000 members, shaped the man who would become a cardinal, and then pope to the world’s Roman Catholics.

Pope Leo XIV is the first pope who belongs to the Order of Saint Augustine, whose principles, priests say, offer a window into what type of pontiff Leo may be. Augustinians follow spiritual ideals aimed at bringing people together,

Cardinal Robert Prevost, the first U.S. pope in the 2,000-year history of the Catholic Church, previously led a Catholic religious order. Prevost, 69, who chose the name Pope Leo XIV, was formerly the prior general,