The Diocese of Ossory is a diocese

Diocese

A diocese is the district or see under the supervision of a bishop. It is divided into parishes.An archdiocese is more significant than a diocese. An archdiocese is presided over by an archbishop whose see may have or had importance due to size or historical significance...

 in Ireland

Ireland

Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

 in the Ossory

Ossory

The Irish geographical name Ossory can refer to:* Kingdom of Osraige* Roman Catholic Diocese of Ossory* Church of Ireland diocese of the Bishop of Ossory* A prophet of the Omnian religion in Terry Pratchett's Discworld...

 region, established in the year AD 549

549

Year 549 was a common year starting on Friday of the Julian calendar. The denomination 549 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.- Byzantine Empire :* The Ostrogoths under Totila...

. Its territory corresponds to the medieval Kingdom of Ossory. The Roman Catholic Diocese of Ossory

Roman Catholic Diocese of Ossory

The Roman Catholic Diocese of Ossory is a Roman Catholic diocese in eastern Ireland. It is one of six suffragan dioceses in the ecclesiastical province of Dublin and is subject to the Archdiocese of Dublin...

 continues as an independent diocese within the Roman Catholic Church

Roman Catholic Church

The Catholic Church, also known as the Roman Catholic Church, is the world's largest Christian church, with over a billion members. Led by the Pope, it defines its mission as spreading the gospel of Jesus Christ, administering the sacraments and exercising charity...

 headed by the Bishop of Ossory

Bishop of Ossory

The Bishop of Ossory is an episcopal title which takes its name after the ancient of Kingdom of Ossory in the Province of Leinster, Ireland. In the Roman Catholic Church it remains a separate title, but in the Church of Ireland it has been united with other bishoprics.-History:The diocese of Ossory...

; in the Church of Ireland

Church of Ireland

The Church of Ireland is an autonomous province of the Anglican Communion. The church operates in all parts of Ireland and is the second largest religious body on the island after the Roman Catholic Church...

, it is grouped with Cashel

Cashel, County Tipperary

Cashel is a town in South Tipperary in Ireland. Its population was 2936 at the 2006 census. The town gives its name to the ecclesiastical province of Cashel. Additionally, the cathedra of the Roman Catholic Archdiocese of Cashel and Emly was originally in the town prior to the English Reformation....

, Waterford

Waterford

Waterford is a city in the South-East Region of Ireland. It is the oldest city in the country and fifth largest by population. Waterford City Council is the local government authority for the city and its immediate hinterland...

, Lismore

Lismore, County Waterford

Lismore is a town in County Waterford, Ireland. It is located where the N72 road crosses the River Blackwater.-History:It was founded by Saint Mochuda, also known as Saint Carthage. In the 7th century, Lismore was the site of the well-known Lismore Abbey. It is also home to Lismore Castle, the...

, Ferns

Ferns, County Wexford

Ferns is a small historic town in north County Wexford, Ireland with a population of about 900. It is 16 km from Enniscorthy, where the Gorey to Enniscorthy N11 road joins the R745 regional road...

 and Leighlin in the Diocese of Ossory and Cashel. Its patron saint is the firth biscop of Ossory, Ciarán of Saighir

Ciarán of Saighir

Saint Ciarán mac Luaigne or Ciarán of Saigir was an early Irish bishop and patron saint of Ossory, who was supposed to have flourished in the second half of the 5th century. He is also referred to as Ciarán the Elder in order to distinguish him from Ciarán of Clonmacnoise...

.