Saint Zélie Martin (1831–1877), the mother of Saint Thérèse of Lisieux, was a devout Catholic, entrepreneur, and a model of holiness in family life. Born in Gandelain, France, she initially sought to enter religious life but was turned away due to health issues. She instead embraced lay life, mastering the craft of lace-making and establishing a successful business in Alençon, known for its exquisite Alençon lace. Her dedication to her work and faith created a foundation for her future vocation as a wife and mother.

In 1858, Zélie married Louis Martin, a watchmaker, and together they built a household rooted in love, prayer, and self-sacrifice. The couple welcomed nine children, though only five daughters survived to adulthood, all of whom entered religious life. Zélie was known for her tireless efforts to provide for her family, her charitable works, and her deep devotion to God. Despite her busy life, she maintained a strong spiritual focus, exemplifying faith in her parenting and daily tasks.

Zélie faced immense suffering when she was diagnosed with breast cancer in 1865, enduring her illness with remarkable courage and trust in God until her death at age 45. She and Louis were canonized together on October 18, 2015, by Pope Francis, making them the first married couple canonized as saints in modern history.