St. Margaret Mary Alacoque (1647-1690) was born in France to a virtuous and distinguished family. As a child she showed great devotion to Jesus in the Blessed Sacrament, and by the age of 9 was practicing severe penances. In her childhood she became sick with rheumatic fever and was confined to bed for four years. She made a vow to the Blessed Virgin to consecrate herself to the religious life, after which she was instantly healed. She often had visions of Jesus, which she thought was a normal experience in the spiritual life. When she turned 17 her mother insisted that she establish a place for herself in the world. Margaret imagined that her childhood vow was not binding, and persuaded herself that she could serve God while living at home and continuing her penances and charity to the poor. She then joined her brothers at dances and began considering marriage. One day, upon returning home from a carnival ball, Jesus appeared to her and reproached her for her infidelity, reminding her of her promise. Margaret then entered a Visitation convent at the age of 24. Jesus appeared to her frequently, and entrusted to her the mission of establishing devotion to his Sacred Heart during a time when religion in France had grown rigorous and cold. Because of her visions she was greatly persecuted by those around her, until her virtue under suffering won over her enemies. Her visions were determined to be genuine and officially recognized by the Catholic Church 75 years after her death. Her feast day is October 16th.