A religious congregation founded by the brothers Marie-Theodore and Marie-Alphonse Ratisbonne in Paris, France in 1843 for the conversion of the Jews and the education of the young. The nuns receive their spiritual guidance from the priests of Notre Dame de Sion, a congregation of secular priests. The congregation has houses, schools and orphanages in France, Belgium, Italy, Austria, Hungary, Rumania, Bulgaria, Turkey, Palestine, Egypt, Tunis, England, Australia, Canada, Brazil, Costa Rica, and the United States. The mother-house is in Paris.