Saint Marguerite-Marie Alacoque (1647-1690), a Visitandine nun from Paray-le-Monial, received visions of the Sacred Heart of Jesus, who entrusted her with the mission of promoting this devotion. Despite initial doubts, she found the support of Saint Claude La Colombière. She died in 1690 and was canonized in 1920. Her feast day is celebrated on October 16.