• First Mass in Huronia is held on the southern shores of Georgian Bay.

• Six Jesuits are martyred.

• First Catholic parish in Ontario for Europeans is established in Windsor.

• Catholics from Scotland settle in Stormont and Glengarry counties.

• Right Reverend Edmund Burke, Vicar-General for Upper Canada, purchases parcels of land for future sites of Catholic churches and institutions.

• York is founded with the arrival of John Graves Simcoe. 

• Catholic settlers in Ontario number about 170.¹

• War of 1812

• St. Paul's Church, the first Catholic parish in Toronto, is established.

• Upper Canada is transferred from the jurisdiction of the Bishop of Québec to the new Bishop of Kingston, Bishop Alexander Macdonell.

• Upper and Lower Canada Rebellions.

• December 17: Diocese of Toronto is created covering the western half of Upper Canada with Bishop Michael Power appointed as the first Bishop.

• June 26: Bishop Power is installed at St. Paul's Church in Toronto.

• October: First Toronto diocesan synod is held to establish the policies and regulations to govern the new diocese and its 25,000 Catholics. ²

• May 8: Bishop Power lays the cornerstone of St. Michael’s Cathedral.

• December 7: St. Michael’s Palace (Episcopal Residence, Chancery Office and Cathedral Rectory) is blessed

• October 1: Bishop Power dies and is buried beneath the unfinished cathedral.

• Catholic population is 50,000³

• September 29: St. Michael’s Cathedral is consecrated by Bishop Bourget of Montréal.

• September 22: Bishop Armand-François-Marie de Charbonnel is installed as the second bishop of Toronto.

• Bishop de Charbonnel uses his personal estate to pay off debt on St. Michael's Cathedral.

• May:  St. Michael's College is founded.

• St. Michael’s Cemetery is established.

The heraldic crests for the dioceses of Hamilton and London.

• The Diocese of Toronto is divided by the erection of the dioceses of Hamilton and London.

CC SP.01.03  A public notice regarding the closure of St. Paul's Cemetery, 1857

• Cemetery by St. Paul’s Church is officially closed.

• House of Providence opens.

• Bishop de Charbonnel imports St. Michael’s Cathedral’s three east windows and the Stations of the Cross from France.

• August 16: Bishop John J. Lynch is appointed coadjutor to Bishop de Charbonnel.

• April 29: Bishop de Charbonnel resigns and returns to France.  Bishop Lynch becomes the third Bishop of Toronto.

• Bishop Lynch holds a diocesan synod to solidify the regulations governing the 40,000 Catholics in his care.⁴

• July 1: Dominion of Canada is established through the British North America Act

• March 18: Pope Pius IX raises Toronto to an Archdiocese during Vatican Council I, making Bishop Lynch an Archbishop.

• St. Michael's Cathedral is completed with the addition of the tower, steeple, sacristy, bells and a fence.

• Jubilee Riots

• Sacred Heart Orphanage, also known as "Sunnyside", is established on the site of today's St. Joseph's Health Care Centre.

• Archbishop Lynch establishes a seminary in St. John's Grove (located on the property of Our Lady of Lourdes Parish).

• Auxiliary Bishop Timothy O'Mahony is appointed to the Archdiocese of Toronto and takes up residence at St. Paul's Parish.

• Catholic population is 57,000⁵

• October 9: Cornerstone of the new St. Paul’s Church is laid.

• May 12: Archbishop Lynch dies and is buried in the garden of St. Michael's Cathedral.

• November: Archbishop John Walsh is installed in Toronto.

• Bishop de Charbonnel dies a Capuchin friar in France.

• June 7: Archbishop Walsh blesses St. John's Chapel, an addition to St. Michael’s Cathedral.

PH 31P/227AL  St. Michael's Hospital

• St. Michael’s Hospital is founded by the Sisters of St. Joseph.

• The Catholic Register is started by the Archdiocese of Toronto.

• July 30: Archbishop Walsh dies and is buried in front of the altar of the Blessed Virgin Mary in St. Michael's Cathedral.

• Catholic population is 65,000, served by 85 parishes and missions⁶

• May 3: Archbishop Denis T. O’Connor is installed in Toronto.

• Mount Hope Cemetery is opened.

• April 13: Bishop Fergus Patrick McEvay is appointed Archbishop of Toronto.

• May 4: Archbishop O’Connor resigns.
• Canadian Catholic Church Extension Society is founded [name changes to Catholic Missions in Canada in 1999].

• October 23: Cornerstone of St. Augustine's Seminary is laid.

• Catholic population is 70,000 and Archbishop McEvay has created seven new parishes, bringing the total number of churches to 92; he has also built 10 church buildings and a new archiepiscopal residence.⁷

• May 10: Archbishop McEvay  dies and is buried in Regina Cleri Cemetery at St. Augustine’s Seminary
• June 30: Archbishop O'Connor  dies and is buried at Mount Hope Cemetery.

• December 22: Archbishop Neil McNeil arrives in the Archdiocese of Toronto.

PH 26S & PH 26  St. Augustine's Seminary and miscellaneous photos of seminarians who attended.  

• Catholic Charities Office is formed [name changes: Federation of Catholic Charities (1927); Council of Catholic Charities (1946); Catholic Charities of the Archdiocese of Toronto (1981)].

• August 28: Opening of St. Augustine's Seminary.

• June 28: Outbreak of World War I

• Catholic population is 75,000, served by 100 parishes and missions ⁸

MN PC25.04  Archbishop McNeil's pamphlet.

• February: Archbishop McNeil issues pamphlet entitled "The Pope and the War".

• November 11: Armistice is signed ending World War I.

• China Mission Seminary is established next to St. Augustine's Seminary, later becoming the Scarborough Foreign Mission Society.

• Catholic population is 125,000, served by 119 parishes and missions ⁹

• September: Foundation of the Institute of Mediaeval Studies [is created a Pontifical Institute in October 1939].
• October 29: Stock market crashes marking the beginning of Great Depression

• May 25: Archbishop McNeil dies and is buried at St. Augustine's Seminary.

• Catholic population is 165,000¹⁰ and the number of parishes and missions has grown to 126 ¹¹

• Mar 20: Archbishop James C. McGuigan is installed in Toronto. Under his administration, the following Auxiliary Bishops are appointed: Benjamin I. Webster (1946-1954); Francis V. Allen (1954-1977); Francis A. Morocco (1955-1968).

• St. Michael’s Choir School is founded

• World War II: Archbishop McGuigan releases priests to serve as chaplains in the armed forces and forms a unit of ninety women's societies sending parcels overseas, providing chapels and reading rooms in military camps and serving meals.

• Archbishop McGuigan’s administration conducts many successful fund-raising campaigns, including ones for St. Augustine's Seminary and for Catholic education.

• February 18: Archbishop McGuigan is elevated to the Sacred College of Cardinals, becoming the first English-speaking Cardinal in Canada.

• June 18-22: Marian Congress in Ottawa is presided over by Cardinal McGuigan as the special representative of Pope Pius XII.

• Catholic population is 197,000, served by 158 parishes and missions ¹²

• Opening of Holy Cross Cemetery in Thornhill.

The heraldic crest for the Diocese of St. Catharines'.

• November:  Establishment of the Diocese of St. Catharines.

• Catholic population is 365,000, served by 153 parishes and missions ¹³

• February 18: Archbishop Philip F. Pocock is named Coadjutor to the Archbishop of Toronto and takes over the administration of the Archdiocese. Under his administration, the following Auxiliary Bishops are appointed: Thomas B. Fulton (1968-1978); Aloysius M. Ambrozic (1976-1990).

• The Second Vatican Council, or Vatican II

• Senate of Priests is established.

• January: Archdiocesan Pastoral Council is established.

• April: Toronto School of Theology is incorporated.

• Cardinal McGuigan resigns.

• Catholic population is 750,000, served by 203 parishes and missions ¹⁴

• April 8: Cardinal McGuigan dies and is buried at St. Augustine's Seminary.

• May-June: The first 26 Permanent Deacons of the Archdiocese of Toronto are ordained in five separate ceremonies by Archbishop Pocock.

• ShareLife is established when Archbishop Pocock withdrew the Council of Catholic Charities from the United Way.

• By 1978 the Catholic population is 900,000 and 45 new parishes had been built for a total of 210 parishes and missions¹⁵

• April 29: Archbishop Pocock resigns.
• June 5: Bishop Gerald Emmett Carter is installed as Archbishop of Toronto. Under his administration, the following Auxiliary Bishops are appointed: Robert B. Clune (1979- 1997); M. Pearse Lacey (1979-1993); Leonard J. Wall (1979-1992).

• May 26: Archbishop Carter is elevated to the Sacred College of Cardinals.

Official commemorative booklet from the annual Cardinal's Dinner.

• Cardinal Carter begins the annual Cardinal’s Dinner.

• Covenant House is established in downtown Toronto.

• Catholic population is 1,214,000, served by 214 parishes, missions and chapels¹⁶

• September 6: Archbishop Pocock dies and is buried at Holy Cross Cemetery, Thornhill.
• September 14-15: Pope John Paul II visits various parts of the archdiocese as part of a pastoral visit to Canada.

• May 22: Bishop Ambrozic is appointed Coadjutor Archbishop. 

• Ontario Government passes legislation providing full funding to Catholic high schools

• March 17: Cardinal Carter resigns, making Archbishop Ambrozic the new ordinary of the Archdiocese of Toronto. Under Archbishop Ambrozic’s administration, the following Auxiliary Bishops are appointed: Nicola De Angelis, C.F.I.C. (1992- 2003); John S. Knight (1992-2001); Terrence Prendergast S.J. (1995-1998); R. Anthony G. Meagher (1997-2002); John A. Boissonneau (2001- Present); Richard J. Grecco (2002-2009); Daniel J. Bohan (2003-2005); Peter J. Hundt (2006-Present).

• April: Archbishop Ambrozic announces the creation of an office of youth ministry [now called Office of Catholic Youth].

• Catholic population is 1,337,000¹⁷, served by 233 parishes, missions and chapels ¹⁸

• January 18: Archbishop Ambrozic is elevated to the Sacred College of Cardinals.

• November 5: Official Blessing of St. Paul's Church as a Minor Basilica.

• July 23-28: World Youth Day in Toronto.

• November 16: Canadian Catholic Bioethics Institute (CCBI) is officially opened.

• April 6: Cardinal Carter dies and is buried at Holy Cross Cemetery, Thornhill.

• April: Cardinal Ambrozic attends the conclave which elects Pope Benedict XVI.

Papal Bull appointing Thomas Christopher Collins as the 10th Archbishop of Toronto.

• December 16: Pope Benedict XVI accepts the resignation of Cardinal Aloysius Matthew Ambrozic and appoints Archbishop Thomas Christopher Collins as the 10th Archbishop of Toronto.

• Serving the Archdiocese of Toronto’s Catholic population of about 1,700,000 are: 217 parishes, 24 missions and various ethnic chaplaincies; 386 diocesan priests; 116 permanent deacons; as well as 90 religious orders comprised of 450 priests, 56 brothers and 643 sisters. ¹⁹