Julian Maunoir was a 17th-century French Jesuit priest who became a prominent missionary in Brittany. Born in 1606 near Rennes, he joined the Society of Jesus with an initial interest in missions to Canada. However, he dedicated his life to the Breton people, mastering their language to preach effectively to local peasants and fishermen. Over four decades of service, he was celebrated for his ability to convert large crowds and reform religious customs, eventually training nearly one thousand missionaries to continue his work.