In January 1929, a committee of Roman Catholics in Ottawa South petitioned Archbishop Guillaume Forbes of the Archdiocese of Ottawa to establish a parish in the area. The petition was granted, and a Catholic community began to form. The church was dedicated to St Ann, a religious sister in the Order of the Blessed Virgin Mary at Paray-le-Monial in France. St. Ann was renowned for her devotion to the Sacred Heart and for her achievements is spreading the practice of First Friday Devotions to the Sacred Heart, a practice at one time common in many Roman Catholic churches. Substantial repairs and modifications have been made to the church building over the years, particularly in 1967, 1971-72, 1975, 1981, and most notably the interior of the church was extensively modified in the late 1990’s.