On February 26th, 1953 the Most Reverend Martin D. McNamara, the first Bishop of the Joliet Diocese, authorized Father John Savukynas, MIC, to locate property in Oswego for a Catholic Church. Father John was pastor of Saint Mary Church in Plano. The new church would be called Saint William, Mission of Saint Mary. The Diocese purchased four lots on Washington Street and construction of the church began. Archbishop William D. O`Brien, Director of the Extension Society, had received a $30,000 donation for a new church provided it was named Saint Anne. The donor had great devotion to Saint Anne, hence, Saint William gave way to Saint Anne. The congregation of 30 families met in the community room at the Oswego High School, which is now known as Traughber Junior High School. On Christmas Eve 1953, Mass was offered for the first time in the new mission church, The steady growth in the area led to the purchase of eight more acres behind the church as the possible site for a new and larger building. This transpired on March 20, 1957, As the growth continued, a neighboring house was purchased as a rectory.