By Sarah Losardo … It was in Paris that she discovered the identity of the priest in her vision – St. Vincent De Paul, the founder of the Sisters of Charity. In January 1830, Zoe finally joined the Sisters of Charity in Paris, taking the name Catherine. The same year, first in July and again in November, Sister Catherine was visited by the Blessed Virgin Mary, who entrusted to her a medallion to be given to the world.