Louis Martin (22 August 1823 – 29 July 1894) and Marie-Azélie "Zélie" Guérin Martin (23 December 1831 – 28 August 1877) were two married Roman Catholic French laypeople and the parents of five Roman Catholic nuns, including Thérèse of Lisieux, a Carmelite nun who was canonized as a saint of the Catholic Church in 1925. On 18 October 2015, the couple were also canonized as...