Jean de Labadie was a 17th-century French Pietist. Originally a Jesuit priest, he became a member of the Reformed Church in 1650, before founding the community which became known as the Labadists in 1669. At its height the movement numbered around 600 with thousands of adherents further afield. It attracted some notable female converts such as the famed poet and scholar, Anna Maria van Schurman, and the entomological artist
Maria Merian.