[3] In 1968, Ottawa Archbishop Joseph-Aurèle Plourde authorized a small group of Catholics who remained attached to the Church's traditional liturgical heritage to continue to use the Latin Tridentine Mass.

[4] This group found an older priest who agreed to serve them in this desire, and they received permission to use the chapel of the Monastery of the Sisters Adorers of the Precious Blood on Echo Drive in Ottawa for Mass.

At the time the Maronite community in Ottawa was growing rapidly as a result of the Lebanese Civil War.

In 1997, on the patronal feast (23 November), Archbishop Gervais erected St. Clement as a full canonical bilingual indult parish serving the faithful wishing to worship according to the earlier Roman liturgy.

[4] In June 2011, Archbishop Terrence Prendergast proposed that the St Clement parish community relocate to Ste-Anne Church, a heritage building in Lowertown which had closed due to low attendance.

[3][6] Members of the parish organize and lead the annual Marie Reine du Canada Pilgrimage, a 100 km pilgrimage on foot from Saint-Joseph-de-Lanoraie to the Marian shrine of Notre-Dame du Cap at Cap de la Madeleine, Quebec.