Overview
St Mogue’s Island sits in the centre of Templeport Lough near Bawnboy, County Cavan. The small, tree‑clad island is famed as the birthplace of St Mogue (also known as St Aidan), an early‑sixth‑century saint who later became Bishop of Ferns. Today the island is a tranquil spot of ruins, a historic graveyard and a living piece of Irish folklore.
History
The Martyrology of Donegal records that a weaver’s wife gave birth to the future saint on the island after a mysterious woman sought shelter. A miraculous flagstone moved at her touch, carrying the infant across the lake to be baptised by St Killian and back again with a bell that later became known as Mogue’s Bell. The stone later ferried coffins to the island graveyard until it split in two during a lovers’ test – one half sank, the other remains on the island.
St Mogue is believed to have founded a monastic settlement here in the seventh century. The original stone church fell into ruin during the medieval period; a new stone church was rebuilt in the eighteenth century and survived the Penal Times as a secret place of worship. Carved stones in the graveyard date from the sixteenth century. The burial ground, now closed to new interments, holds about twenty‑five marked graves – a figure confirmed by the community‑heritage survey (RMP classification CV‑SMIL) listed on Historic Graves.
In 1943 the island entered modern folklore when an RAF Beaufighter (serial JL710) crashed into Templeport Lough on St Patrick’s Night. The wreckage still lies on the lake floor and is a point of interest for wartime‑history enthusiasts and experienced divers.
Recent heritage funding – €140 000 awarded to four archaeological monuments in Cavan – includes work on St Mogue’s Island, creating jobs for specialist craftspeople and helping preserve the ruins.
Legend & Folklore
The moving flagstone story is the heart of the island’s myth. Local tradition says a fragment of the original stone can still be seen near the ruins. A holy water font in St Mogue’s Church, Bawnboy – carved from that very stone – is said to have been used for the infant’s baptism on the island.
Another striking tale involves Mary McGovern, a native of Cavan who survived the sinking of the RMS Titanic in 1912 because she carried a handful of “St Mogue’s clay” from the island – soil scraped from the ruined walls – which she believed saved her life. The clay is still kept by some locals who claim it protects against fire and drowning.
What to See & Do
- Monastic ruins – The stone walls and scattered carved stones give a palpable sense of early Irish Christianity.
- Graveyard – Walk among the historic headstones; the tradition says the clay from the ruined walls protects against fire and drowning.
- The flagstone fragment – Look for a weathered stone near the ruins that locals claim is part of the legendary moving stone.
- Wildlife – Templeport Lough is an official wildlife sanctuary; waterfowl, swans and reeds create a peaceful backdrop.
- Boat tours – Guided trips run from the slipway at St Peter’s Church, offering commentary on the saint’s life, the flagstone legend, the 1943 crash and the island’s archaeology.
- St Mogue’s Festival – Held in the first week of August, the festival includes boat hires, traditional music, storytelling and a chance to collect a pinch of the famed island clay.
- Photography – The island’s solitary tree‑clad mound rising from the glassy lake makes a striking subject, especially at sunrise or sunset.
- Diving the wreck – Certified divers can arrange a guided dive on the Beaufighter wreck; the site is listed on local dive‑club notices.
Events & Festivals
- St Mogue’s Festival (first week of August) – A community‑run celebration featuring live music, folk storytelling, craft stalls and organised boat trips to the island. Proceeds support the maintenance of the island’s heritage site.
- Bawnboy Community Festival – The annual village festival often incorporates a special boat hire to St Mogue’s Island, swimming contests on Templeport Lough and a heritage trail that highlights the island’s history.
- Cavan Heritage Podcast – “Where We Belong” (Season 2, Episode 5) – A 30‑minute interview with local historian Oliver Barry gives an oral history of the island’s medieval church and folklore. The episode is free to stream on Apple Podcasts and Spotify.
Practical Information
Access – The island is reachable only by boat. Most visitors set off from the slipway beside St Peter’s Church of Ireland in Bawnboy; signs from the Bawnboy turn‑off on the N87 lead to the lake and the launch point.
Boat tours – Operate May–September. Bookings are essential, especially in August when the festival attracts crowds. The service is suitable for all ages – children under 16 must be accompanied by an adult. Boats are not wheelchair‑accessible; visitors with limited mobility should arrange special assistance in advance.
Dog‑friendly – Dogs are allowed on the boat tours but must be kept on a leash at all times. They are also permitted on the island under the same condition.
Facilities – No permanent facilities on the island – bring water and a packed lunch. Nearest restroom and parking are at the St Peter’s Church car park (free parking). There is no on‑site café.
Admission – Free entry to the island; no charge for the boat tours (prices set by the operator).
Holy wells – The parish of Templeport contains four holy wells – Corran, Toberlyan, Bellaleenan and Mullaghlea – each with its own local traditions. They lie a short walk from the lake shore and are worth a quick visit for those interested in Celtic spirituality.
Safety – The lake can be windy; small children should be supervised at all times. The island’s low‑lying terrain can become slippery after rain.
Further reading – More details and the full legend can be read on the Templeport Development Association page: St Mogue’s Island.
Nearby Attractions
A day exploring Templeport Lough can be combined with other Cavan highlights:
- Annagh Lake – a short drive north offers swimming and angling opportunities.
- Bawnboy village – explore the 17th‑century Bawnboy Castle and the striking “yellow bawn” ruins.
- Cavan County Museum – displays the original Killycluggin Stone and other artefacts from the region’s early Christian period.
- Belturbet – a historic market town on the River Erne, ideal for a lunch stop before heading back.
Directions
From Dublin, take the N3 to Belturbet, then the N87 west for about 2 km before Bawnboy; follow the signs to Templeport Lough and St Peter’s Church. From Belfast, travel via the A3 to Cavan Town, then the N3 north to Belturbet and continue as above.
Enjoy the quiet beauty, the layered history and the living folklore that make St Mogue’s Island a unique spot on the Cavan landscape.