A formal meeting to establish a Roman Catholic Parish in Kingston was held on 20 July 1807.
The contract to build a stone Catholic Church in Kingston was signed on 8 October 1808.
The Vicariate Apostolic of Upper Canada was established by the Bishop of Quebec on January 12, 1819. Bishop Alexander Macdonell was named Vicar Apostolic.
The Diocese of Kingston - known by its Latin name Regiopolitana - was erected on 27 January 1826 and Bishop Macdonell was appointed the first Bishop of Kingston.
Having previously been appointed Vicar Apostolic of Upper Canada on 12 January 1819, Alexander Macdonell becomes the first Bishop of Kingston 27 January 1826.
Bishop Macdonell applied to Rome for a coadjutor to assist him shortly after is consecration. An English priest, Father Thomas Weld, was selected for the role, and was consecrated as the Titular Bishop of Amycla and coadjutor with the right of succession as the Bishop of Kingston on 6 August 1826.
Bishop Rémigius Gaulin was appointed Coadjutor Bishop 10 May 1833 before succeeding as Bishop on 14 January 1840.
Brought to Kingston from Montreal by Bishop Gaulin to teach Catholic girls, the Congregation of Notre Dame opened their first English mission with a school in the upper floors of the Kingston Whig Building. Their first class, consisting of 12 pupils began on November 25th.
The boundaries of the Diocese of Kingston were first diminished when the Diocese of Toronto was created on 17 December 1841.
The boundaries of the Diocese of Kingston were first diminished when the Diocese of Toronto was created on 17 December 1841.