August Pierre Laveille (1856–1928), the vicar-general of Mieux, was commissioned by the Mother Prioress of the Carmel of Lisieux, St. Thérèse's sister Pauline, to write the official biography of the Little Flower. Msgr. Laveille also wrote several other popular biographies, including those of Belgian Cardinal Désiré Mercier and St. Louis de Montfort.