Unofficial guide. Not the National Monuments Service, the OPW, Fáilte Ireland or the landowner. Disclaimer
At a glance
- TypeReligious house - Premonstratensian canons
- Date or period mentioned17th century
- Recorded size 56m N-S; 40m E-W
What to look for
- Graveyard
Picked out from the Archaeological Survey description below.
Can you visit?
- No source says it is open to the public.Most monuments in Ireland stand on private farmland.
- Ask the landowner before crossing fields, close gates, leave the stones as you find them.Visiting responsibly
History and description
The priory of Holy Trinity, Lough Oughter, founded by grant of Cathal O'Reilly in 1237, was a daughterhouse of the Premontratensian abbey of Trinity Island, Loughkey, Co. Roscommon (Gwynn & Hadcock 1970, 206). Situated at the centre of a now disused, roughly oval-shaped graveyard (dims. 56m N-S; 40m E-W).
Full archaeological record 227 words
The priory of Holy Trinity, Lough Oughter, founded by grant of Cathal O'Reilly in 1237, was a daughterhouse of the Premontratensian abbey of Trinity Island, Loughkey, Co. Roscommon (Gwynn & Hadcock 1970, 206). Situated at the centre of a now disused, roughly oval-shaped graveyard (dims. 56m N-S; 40m E-W). Remains comprise ivy-clad W gable and portions of N and S walls of a rectangular church (int. dims. c. 16m E-W; c. 5m N-S) with a transept on S side (int. dims. c. 6m N-S; c. 5m E-W) which appears to have been added during restoration of the priory in the 17th century. Walls of main body of church have a pronounced base batter. Main entrance in W gable, which it is believed, may have been originally adorned by the celebrated Romanesque doorway (CV025-071002-) now at the modern cathedral of Kilmore. Additional blocked entrance with masonry arch at W end of S wall. Fenestration includes large pointed window with chamfered ashlar jambs directly above W gable entrance and stray fragments of window spandrels, tracery and mullions of 15th-century date, scattered about the graveyard. W gable may have been surmounted by a small belfry. A bevelled cross-base with square socket and possible ringed cross-head, and a grotesque head (1712) which is now in the National Museum, were noted at the site in 1948. (O'Connell 1937, 242-289; Davies 1948, 99-109)
Archaeological Survey of Ireland, National Monuments Service (CC BY 4.0) · Updated 22 December 2008 · Based on the Archaeological Inventory of County Cavan. It describes the site as it was when surveyed.
More abbeys & friaries nearby
Drumlane Abbey
Religious house - Augustinian canons · Drumlane (Lower Loughtee By.) · Cavan · 8.1 km away

Abbeylara Cistercian Abbey
Religious house - Cistercian monks · Abbeylara · Longford · 25 km away
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Around Trinity Island Abbey
Other heritage nearby
- St. Felimp's WellHoly well · 3.3 km
- Cloughoughter CastleCastle · 3.6 km
- Drumlane Round TowerRound tower · 8.1 km
Recorded within 5 km
- 72 ringfortsArchaeological Survey of Ireland
- 8 castlesArchaeological Survey of Ireland
- 4 holy wellsArchaeological Survey of Ireland
- 2 ancient churchesArchaeological Survey of Ireland
- 1 megalithic tombArchaeological Survey of Ireland
- 1 monastic siteArchaeological Survey of Ireland
Walks and trails
- Killykeen Forest Park - Nature TrailWalking Trail · 2.9 km · nearest point 2.1 km
- Killykeen Forest Park - Multi-AccessWalking Trail · 0.6 km · nearest point 2.2 km
- Killykeen Forest Park - Gartanoul TrailWalking Trail · 5.3 km · nearest point 2.5 km
Outdoors, towns and places to stay
- Killykeen Forest ParkForests · 2.2 km
- Killykeen Forest ParkForests · 2.6 km
- Hilton ParkHistoric stays · 23 km
Other attractions nearby
- St. Fethlimidh’s CathedralHistoric Houses and Castle · 3.2 km
- Lough OughterHistoric Houses and Castle · 3.7 km
- Adventure LegendWalking · 5.2 km
- The Cathedral of Saint Patrick and Saint FelimHistoric Houses and Castle · 6.7 km
What's on nearby
- Ireland and the EU - Celebrating Ireland's Presidency of the Council of the European Union.2026-11-12 · 6.6 km · free
Excavations nearby
- 04E1171 Site 1 Pollamore Near , County CavanRoad-scheme excavation report (TII) · 1.1 km
- 04E1172 Site 5 Cornagleragh or Oldtown , County CavanRoad-scheme excavation report (TII) · 7.6 km

