Diocese changed little from when it was a mission in 1841, which extended from the River Murray to Queensland, and from the Blue Mountains to the border of South Australia, except that in on 10 May 1887 it lost territory to establish the Roman Catholic Diocese of Wilcannia, to which more territory was lost in 1917, when it was renamed Roman Catholic Diocese of Wilcannia-Forbes. Bishops The following individuals have been elected as Roman Catholic Bishop of Bathurst: {| class="wikitable" !Order !!Name !!Date installed !!Term ended !!Term of office !!Reason for term end |- |align="center"| ||Matthew Quinn † || 1 November 1866 ||16 January 1885 ||align="right"| ||Died in office |- |align="center"| ||Joseph Byrne † ||align="center"|9 August 1885 ||align="center"|12 January 1901 ||align="right"| ||Died in office |- |align="center"| ||John Dunne † ||align="center"|12 January 1901 ||align="center"|22 August 1919 ||align="right"| ||Died in office |- |align="center"| ||Michael O'Farrell CM † ||align="center"|16 June 1920 ||align="center"|4 April 1928 ||align="right"| ||Died in office |- |align="center"| ||John Francis Norton † ||align="center"|3 April 1928 ||align="center"|20 June 1963 ||align="right"| ||Died in office |- |align="center"| ||A. R. E. Thomas † ||align="center"|29 September 1963 ||align="center"|12 April 1983 ||align="right"| ||Retired as Bishop Emeritus of Bathurst |- |align="center"| ||Patrick Dougherty † ||align="center"|1 September 1983 ||align="center"|11 November 2008 ||align="right"| ||Retired as Bishop Emeritus of Bathurst |- |align="center"| ||Michael McKenna ||align="center"|15 April 2009 ||align="center"|present ||align="right"| || n/a |- |} John Francis Norton was Coadjutor Bishop from 8 Mar 1926 to 3 Apr 1928, at which time he became bishop of this diocese. Other priests of this diocese who became bishops Alfred Joseph Gummer † , appointed Bishop of Geraldton in 1942 Kevin Michael Manning, appointed Bishop of Armidale in 1991 Patrick Michael O'Regan, appointed Bishop of Sale in 2014 Extent Today the Diocese covers an area of and comprises the territory immediately west of the Great Dividing Range. The eastern boundary, except from Mt. Coricudgy by the Great Dividing Range southerly to Mt. Boonbourwa by a range generally south-easterly and then south-westerly, by a line west to the junction of Coorongooba and Running Stream Creeks, by Running Stream Creek downwards to Capertee River, by a line south and a line west to Mt. Canobla by a range generally south-westerly to the Great Dividing Range at Mt. McLean. The southern boundary is the Abercrombie and Lachlan Rivers (including West Cowra). The western boundary is the Eurow-Nyrang Mountains, the Harvey Range, a line from the junction of the Brummagen