She was born Esther Blondin on 18 April 1809 in Terrebonne, Lower Canada, to Jean-Baptiste Blondin and Marie-Rose Limoges, simple farmers who lived on a country road called Côte Terrebonne on the edge of the Mille Îsles River.
Of this group, Blondin and four other Sisters made their profession of religious vows on 8 September 1850, thereby allowing the congregation to become legally formed.