| July 3, 1834 | First petition by French Prairie settlers to Canada for priests |
| November 24, 1838 | Fr. Francis N. Blanchet and Fr. Modeste Demers, missionaries to Oregon Country arrive at Ft. Vancouver |
| January 6, 1839 | First Mass in Oregon, St. Paul, St. Paul |
| December 1, 1843 | Vicariate Apostolic of Oregon Territory established |
| July 31, 1844 | Fr. Peter DeSmet, SJ, Jesuit priests and Sisters of Notre Dame de Namur arrive in Astoria from Belgium |
| February 8, 1846 | St. John Church, Oregon City, blessed and opened |
| May 24, 1846 | St. Paul Church, St. Paul, cornerstone laid |
| July 24, 1846 | Archdiocese of Oregon City established by Pope Pius IX. Francis N. Blanchet appointed first Archbishop |
| December 24, 1851 | First Christmas Midnight Mass in Portland,
by
Fr. James Croke |
| November 1, 1858 | St. Joseph Church, Jacksonville, dedicated |
| October 21, 1859 | Twelve Sisters of the Holy Names arrive
in
Portland to found school |
| January 17, 1861 | St. Mary Church, Corvallis, dedicated |
| August 17, 1863 | Fr. Leopold Dieleman begins plans for Salem Church and recruits Holy Names Sisters to establish school |
| May 10, 1867 | Roseburg Mission begins, Fr. Thibau appointed
by Archbishop Francis N. Blanchet |
| October 10, 1869 | St. Vincent de Paul Society organized
in
Portland by Fr. Fierens |
| February 5, 1870 | The Catholic Sentinel publishes its first issue |
| October 11, 1874 | St. Mary Star of the Sea Church, Astoria, dedicated |
| July 19, 1875 | St. Vincent Hospital, Portland, dedicated.
Mother Joseph and Sisters of Providence |
| December 20, 1880 | Archbishop Charles John Seghers became second Archbishop of Oregon City |
| October 30, 1882 | Benedictine Priests and Benedictine Sisters
arrive in Oregon |
| August 12, 1883 | St. Mary Church, Bandon, dedicated by
Archbishop Seghers |
| February 1, 1885 | Archbishop William Gross, CSsR, appointed
third Archbishop of Oregon City |
| May 30, 1886 | First Mass at St. Mary Church, Eugene |
| March 25, 1887 | Sisters of St. Mary of Oregon, Beaverton, founded |
| May 8, 1888 | St. Monica, Coos Bay (formerly Marshfield), founded by Fr. Peter Beutgen |
| June 16, 1889 | St. Mary's Home for Boys, Beaverton, cornerstone laid |
| July 29, 1893 | St. Mary's Academy & College, Portland,
received
State Charter. First liberal arts college for women in Pacific N.W. |
| January 28, 1894 | Holy Rosary Church, Portland, dedicated
as
Dominican Mission |
| October 11, 1896 | St. Anne Church, Grants Pass, blessed.
Mass
offered for first time |
| February 12, 1899 | Archbishop Alexander Christie appointed fourth Archbishop of Oregon City |
| September 2, 1901 | University of Portland blessed and dedicated by Archbishop Christie as "Columbia University" |
| November 9, 1922 | Catholic Truth Society of Oregon established by Archbishop Christie |
| June 1, 1925 | U.S. Supreme Court decision on the Oregon School Bill |
| February 19, 1926 | Archbishop Edward D. Howard appointed the fifth Archbishop of Oregon City |
| September 26, 1928 | Papal Decree changes the name of the Archdiocese of Oregon City to Archdiocese of Portland in Oregon |
| September 12, 1933 | Catholic Charities established |
| May 9, 1939 | Dedication of Central Catholic High School |
| March 1, 1955 | Trappist Abbey of Our Lady of Guadalupe,
Lafayette, founded |
| December 9, 1966 | Archbishop Robert J. Dwyer appointed sixth
Archbishop of Portland in Oregon |
| August 13, 1971 | Vicariate for Spanish-speaking established
by
Archbishop Dwyer |
| January 22, 1974 | Archbishop Cornelius M. Power appointed
seventh Archbishop of Portland in Oregon |
| December 6, 1977 | Kenneth D. Steiner and Paul E. Waldschmidt, CSC, appointed Auxiliary Bishops of Portland in Oregon |
| January 29, 1981 | Southeast Asian Vicariate established
by
Archbishop Power |
| July 1, 1986 | Archbishop William J. Levada appointed
eighth
Archbishop of Portland in Oregon |
| April 30, 1996 | Archbishop Francis E. George, O.M.I.,
appointed ninth Archbishop of Portland in Oregon |
| July 24, 1996 | 150th Anniversary of the Archdiocese of Portland in Oregon |
| October 28, 1997 | Archbishop John G. Vlazny appointed tenth
Archbishop of Portland in Oregon |
| December 24, 1999 | Archbishop Vlazny opens Holy Year Door
at
St. Mary’s Cathedral of the Immaculate Conception to begin the Jubilee Holy Year 2000 |
| June 25, 2000 | Eucharist 2000, Feast of Corpus
Christi
Archdiocesan celebration of Jubilee Year 2000 |