St Margaret Mary Alacoque
chief founder of the devotion to the Sacred Heart (q.v.). In 1671 she entered the Visitandine Convent at Paray-le-Monial in central France. Between 1673 and 1675 she received several revelations of the Sacred Heart: the chief features of the devotion were to be Holy Communion on the First Friday of each month, the Holy Hour on Thursdays, and the Feast of the Sacred Heart. Her visions at first were treated as delusions. Feast day, 16 (formerly 17) Oct.