Diocese of Cork (1111-1429) The original Diocese of Cork was established by the
Synod of Ráth Breasail in 1111, but was reduced in size by the establishment of separate Dioceses of
Cloyne and
Ross at the
Synod of Kells in 1152.
Diocese of Cork and Cloyne (14291748) On petition of
King Edward II,
Pope John XXII issued a
papal bull for the union of the Dioceses of Cork and Cloyne on 30 July 1326, with effect from the death of either bishop. The union should have taken effect on the death of Philip of Slane in 1327, but bishops were still appointed to both dioceses. The dioceses were eventually united on the episcopal appointment of Jordan Purcell on 15 June 1429, following their impoverishment from the robbery of church property by the nobility. From 1693 to 1747, the Bishop of Cork and Cloyne was also the
apostolic administrator of the
Diocese of Ross.
Diocese of Cork (17481958) Following a decree by
Pope Benedict XIV on 10 December 1747, the Diocese of Cork was reconstituted as a stand-alone entity, while the Diocese of Cloyne was united with Ross.
Diocese of Cork and Ross (1958present) The modern-day Diocese of Cork and Ross was formed by an
ex aequo principaliter union of the Dioceses of Cork and Ross on 19 April 1958. ==Geography==