On April 30, 1839, Mother Marie Eugénie and Mother Marie Augustine settled in a small apartment on rue Férou, near the church of Saint Sulpice in Paris, and here the Congregation of the Religious of the Assumption was founded. A young Irish woman, Mother Thérèse Emmanuel (Kate O'Neill) joined them in August as they spent the summer in Meudon, and she was followed by Mother Marie-Thérèse.