Thérèse of Lisieux (1873–1897) was a French Discalced Carmelite nun who became one of the most widely venerated figures in the Catholic Church. Born Marie Françoise-Thérèse Martin in Alençon, she entered the cloistered monastery in Lisieux at the age of 15, following in the footsteps of her sisters. She is famously known as the "Little Flower" due to her spiritual approach to holiness. Despite her short life, her theological insights and personal memoirs earned her the title of Doctor of the Church.