John Francis Regis was a 17th-century French Jesuit priest known for his extensive missionary work and dedication to the marginalized. Born in Fontcouverte in 1597, he joined the Society of Jesus and spent his life traveling through difficult mountainous regions to preach. He focused his ministry on the poor, orphans, and women facing exploitation, often establishing practical support systems to aid them. He died in Lalouvesc in 1640, leaving behind a legacy of social reform and religious devotion.