Louis-Édouard Cestac was a 19th-century French priest who dedicated his ministry to supporting the impoverished. Born in Bayonne in 1801, he focused his efforts on providing stability for destitute young women. To achieve this, he and his sister, Marie-Louise-Élise, established the Serviteurs de Marie religious congregation in 1842. Beyond his spiritual work, he contributed to social and agricultural improvements, earning the Legion of Honor from Napoleon III. He died in Anglet in 1868 and was later beatified by the Catholic Church.