Colman O'Shaughnessy, O.P. (died 2 September 1748) was an Irish

Roman Catholic The Catholic Church (), also known as the Roman Catholic Church, is the largest Christian church, with 1.27 to 1.41 billion baptized Catholics worldwide as of 2025. It is among the world's oldest and largest international institut ...

clergyman who served as

Bishop of Ossory . The Bishop of Ossory () is an Episcopal polity, episcopal title which takes its name after the ancient of Kingdom of Ossory in the Provinces of Ireland, Province of Leinster, Ireland. In the Catholic Church it remains a separate title, but i ...

from 1736 until his death in 1748. He was the eldest son of Cormac, second son of Dermott Ó Seachnasaigh. He was educated at

Athenry Athenry (; ) is a town in County Galway, Ireland, which lies east of Galway city. Some of the attractions of the medieval town are its town wall, Athenry Castle, its priory and its 13th-century street-plan. The town is also well known by virt ...

College, after which he became an army officer. When he left his military career, he joined the

Dominican Order The Order of Preachers (, abbreviated OP), commonly known as the Dominican Order, is a Catholic Church, Catholic mendicant order of pontifical right that was founded in France by a Castilians, Castilian priest named Saint Dominic, Dominic de Gu ...

. He made his ecclesiastical studies in

Louvain Leuven (, , ), also called Louvain (, , ), is the capital and largest city of the province of Flemish Brabant in the Flemish Region of Belgium. It is located about east of Brussels. The municipality itself comprises the sub-municipalities of ...

, and he completed them before 1706. After serving on the Irish Mission for years, with great zeal and success, he was elected Provincial of the

on 30 April 1726, serving until 1730. Almost ten years later, he was appointed

by a

papal brief A papal brief or breve (from the Latin "''breve'', meaning "short") is a formal document emanating from the pope. History The introduction of briefs, which occurred at the beginning of the pontificate of Pope Eugene IV (3 March 1431 – 23 Februa ...

on 5 October 1736. When his uncle, William O'Shaughnessy, died in 1744, he became the

Chief of the Name The Chief of the Name, or in older English usage Captain of his Nation, is the recognised head of a family or clan ( Irish and Scottish Gaelic: ''fine'') in Ireland and Scotland. Ireland There are instances where Norman lords of the time like ...

and commenced a

lawsuit A lawsuit is a proceeding by one or more parties (the plaintiff or claimant) against one or more parties (the defendant) in a civil court of law. The archaic term "suit in law" is found in only a small number of laws still in effect today ...

in the

Court of Common Pleas A court of common pleas is a common kind of court structure found in various common law jurisdictions. The form originated with the Court of Common Pleas at Westminster, which was created to permit individuals to press civil grievances against one ...

to recover the ancient

O'Shaughnessy Ó Seachnasaigh, O'Shaughnessy, collectively Uí Sheachnasaigh, clan name Cinél nAedha na hEchtghe, is a family surname of Irish origin. The name is found primarily in County Galway and County Limerick. Their name derives from Seachnasach mac ...

estates at

Gort Gort ( or ) is a town of around 2,800 inhabitants in County Galway in the west of Ireland. Located near the border with County Clare, the town lies between the Burren and the Slieve Aughty and is served by the R458 road (Ireland), R458 and R460 ...

County Galway County Galway ( ; ) is a Counties of Ireland, county in Republic of Ireland, Ireland. It is in the Northern and Western Region, taking up the south of the Provinces of Ireland, province of Connacht. The county population was 276,451 at the 20 ...

Ireland Ireland (, ; ; Ulster Scots dialect, Ulster-Scots: ) is an island in the North Atlantic Ocean, in Northwestern Europe. Geopolitically, the island is divided between the Republic of Ireland (officially Names of the Irish state, named Irelan ...

. The property had been taken from

Roger O'Shaughnessy Sir Roger O'Shaughnessy, The O'Shaughnessy (died 11 July 1690), was Chief of the Name and a captain in the Irish army of James II of England. He was present at the Battle of the Boyne, and died ("sick, though not wounded") ten days after the battl ...

King William III William III (William Henry; ; 4 November 1650 – 8 March 1702), also known as William of Orange, was the sovereign Prince of Orange from birth, Stadtholder of Holland, Zeeland, Utrecht, Guelders, and Overijssel in the Dutch Republic from 167 ...

in 1690, and given to Thomas Prendergast in 1697. Despite a protracted court case, which lasted beyond the life of the bishop, it was finally ruled in favour of the Prendergasts, the

penal laws Penal law refers to criminal law. It may also refer to: * Penal law (British), laws to uphold the establishment of the Church of England against Catholicism * Penal laws (Ireland) In Ireland, the penal laws () were a series of Disabilities (C ...

against Catholics tending to defeat the rights of the O'Shaughnessies.

References

* D'Alton, John
Illustrations, Historical and Genealogical, of King James's Irish Army List (1689)
Dublin: 1st edition (single volume), 1855. pp. 328–32. * ''History of Galway'',

James Hardiman James Hardiman (February 1782 – 13 November 1855), also known as Séamus Ó hArgadáin, was a librarian at Queen's College, Galway and an important historian. Hardiman is best remembered for his '' History of the Town and County of Galway'' (1 ...

, 1820. * ''Tabular pedigrees of O'Shaughnessy of Gort'' (1543–1783), Martin J. Blake, Journal of the

Galway Archaeological and Historical Society The Galway Archaeological and Historical Society was founded on 21 March 1900. It promotes historical preservation, as well as the study of the archaeology and history of the west of Ireland. As of January 2002, the Society had published 53 cons ...

, vi (1909–10), p. 64; vii (1911–12), p. 53. *

John O'Donovan John O'Donovan may refer to: *John O'Donovan (scholar) (1806–1861), Irish language scholar and place-name expert *John O'Donovan (politician) (1908–1982), Irish TD and Senator *John O'Donovan (police commissioner) (1858–1927), New Zealand pol ...

The Genealogies, Tribes, and Customs of Hy-Fiachrach
Dublin: Irish Archaeological Society. 1844. Pedigree of O'Shaughnessy: pp. 372–91. * ''Old Galway,'' Professor Mary Donovan O'Sullivan, 1942. * ''Galway: Town and Gown,'' edited Moran et al., 1984. * ''Galway: History and Society'', 1996. {{DEFAULTSORT:OShaughnessy, Colman 1748 deaths 18th-century Irish Roman Catholic priests Christian clergy from County Galway Roman Catholic bishops of Ossory Irish Dominicans Colman Year of birth unknown