By Marie Baudouin – Croix A sister of Saint Thérèse of Lisieux, Léonie Martin (1863–1941) was one of the five daughters of Zélie and Louis Martin, who were canonized by Pope Francis. She was the least gifted of the five Martin sisters, an emotionally disturbed child who suffered much and caused much anguish in her family. Marie Baudouin-Croix has carefully researched Léonie’s life, including her mother’s voluminous correspondence about her family life. In letters to her daughters, sister, brother, and sister-in-law, Zélie confided the challenges she faced in raising Léonie. Yet Léonie was the first one in the Martin family to understand and to follow Thérèse’s Little Way.