From before the formation  of the Diocese there were Polish families in Calgary and indeed throughout the Diocese. Bishop Legal recorded that in 1913 the Polish congregation had as yet no church and no resident priest although Rev. A.Sylla O.M.I.  attended them from Canmore. Church property had been bought at 22nd Avenue and Jurst Road S.E., and was owned by the Edmonton Diocese in 1913.

By August of 1914 plans had been drawn up to Bishop McNally's specifications for St. Casimir's Church and tenders received for its construction. This church was never begun, however, because of the outbreak of the First World War just at that time. And during the war many of the Polish people left the Diocese.

 Efforts were made by all the Bishops to provide Polish speaking priests, and from the time of Bishop Kidd these came principally from the Reemptorist Order stationed at Our Lady of Perpetual Help, Rev. John Spicer, Rev. Victor Crean, all Redemptorists. Of these, the first Redemptorist to come to the Diocese was Father Shalla, a Canadian-born Pole whom the Polish people remember as the missionary who best understood the Polish spirit.

 After World War II Polish people again began to arrive in Calgary, and formed the Polish-Canadian Club and the Polish Combatants, both concerned to have a Polish priest in their community. In the early 1950's the Redemptorist Provincial asked to be relieved of the Polish mission and Bishop Carroll, through Archbishop Gawlina, the Ordinary of all Polish Displaced Persons, obtained Rev. Leon Trawicki, educated in England, but a Polish refugee priest.

Father Trawicki arrived in August 1955, and began offering Mass for the Polish people at Ste. Familie Church, visited them by traveling around Calgary on a bicycle and initiated a building fund for a church. He also organized the young people and children and formed a Polish school. The Polish community was beset with tragedy. In August, 1956, a year after he came to Calgary, Father Trawicki drowned while helping at a Polish boys' summer camp at Pigeon Lake.

His successor was Rev. Jan Otlowski, a Priest of the Order of the Society of Christ, who arrived on December 8, 1957.

At about the time of the death of Monsignor Slapa the congregation of St. Stephen's Ukrainian Church in Riverside were building a new church and offered their former church and rectory and basement hall at 207 - 6th Street N.E. for $25,000.00. Permission for this contract was given by the Bishop, the property on Memorial Drive was sold, and the possession of the church given in November. Mass was said thereafter in this church, Our Lady Queen of Poland, and the congregation made what renovations were necessary with voluntary labour. When the renovations and furnishing of the church was completed Bishop Carroll dedicated it on March 2, 1958. Indult had to be obtained from the Holy See for the use of the title Our Lady Queen of Poland. When the new church was blessed the title was changed to Our Lady of Peace.

In 1962 Father Otlowski bought property near the University of Calgary on Uxbridge Drive. It was the desire of the Polish community at least to commence a church by 1966, the year of the Polish millennium. the Diocesan Building Committee made it possible for a plan to be presented and offered for tender when Bishop Klein came to Calgary and construction was begun on August 17, 1967. The church, of an unusual design, was opened on April 20, 1968, by Father Wachowicz of Edmonton with the Very Rev. Paul O'Byrne, Administrator authorized the parish to buy a house in the neighbourhood.

 To assist in the spiritual and cultural development of the new parish the Polish Dominican Sisters were invited to the parish from the United States. They bought a house opposite the church and