Louis de Montfort
Louis-Marie Grignion de Montfort, SMM (French pronunciation: [lwi maʁi ɡʁiɲɔ̃ də mɔ̃fɔʁ]; 31 January 1673 – 28 April 1716) was a French Catholic priest known for his influence on Catholic Mariology. He wrote a number of books that went on to become classic Catholic titles, including Secret of the Rosary and True Devotion to Mary, and influenced several popes.