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Ninnidh Láimhdhearg

6th-century bishop and founder of the monastic site at Inishmacsaint

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About Ninnidh Láimhdhearg

Ninnidh (pronounced as "Ninny") (alias Ninnidh the Pious, , meaning one-eyed Ninnidh, Nennius, Nennidhius, Ninnaid) was a 6th-century Irish Christian saint. Ninnidh is regarded as one of the Twelve Apostles of Ireland. He is associated with the shores of Lough Erne and particularly the island of Inishmacsaint and the parish of Knockninny, County Fermanagh, Northern Ireland (derived from the , meaning the Hill of Ninnidh). His feast day is 18 January.

Ninnidh of Inismacsaint is often confused with Ninnidh of the Pure Hand who attended Brigid of Kildare on her deathbed.

Life Ninnidh was born in County Donegal, a grandson of Laoghaire, the High King of Ireland. He was educated under Finian at Clonard, After Saint Patrick's time, the Celtic Church was divided into many territories and ruled by Abbots of Monasteries, only some of whom were Bishops. Ninnidh built a monastery on Inishmacsaint Isle (near Devenish) circa 530A.D. and using the waterways of the time cared for the people from the Erne as far as the sea, sending his priests and monks to the local Churches. In 530 AD Ninnidh held a 40-day fast on Knockninny Hill, during the period of Lent.

Other accounts

The monks of Ramsgate in their Book of Saints say only,

The hagiographer Alban Butler wrote in the Lives of the Irish Saints (1823),

Legacy St. Ninnidh's Bell from a sketch in 1877, when the bell's last whereabouts were known.

St. Ninnidh's feast day is 18 January. St. Ninnidh's well is situated at Knockninny Quay on the shores of Upper Lough Erne and is reputed to have curative properties for eye ailments. In William Henry's Upper Lough Erne in 1739 the well was described as a chief curiosity, "being a plentiful foundation of pure water, having a clearance and coolness scarce to be met with. It was at that time a popular spot for boatspeople to retire to for their entertainments for which and around it are arranged benches of sod and over it a shade of aquatic trees".

St. Ninnidh's bell, traditionally presented to Ninnidh by Senach of Derrybrusk, was kept in Knockninny parish in the 17th century. It was at Castle Caldwell (now incorporated into the Enniskillen Castle Museum in County Fermanagh until 1877 when it was sold at auction to Robert Day of Cork (who sketched the drawing to right). When Day's collection was sold in 1913, this bell was not part of the sale. Although for some time it was identified with a bell in the National Museum of Edinburgh (probably St. Ninian's Bell, formerly from the collection of John Bell), the location of St. Ninnidh's Bell is unknown.

Note that while this Ninnidh is traditionally considered a saint, he is not listed in the latest official, complete martyrology of the Catholic Church, the 2004 Martyrologium Romanum in Latin.

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Important facts

Born
Northern Uí Néill
Positions held
Apostle, Abbot
Also known as
Ninnidh leth derc

Frequently asked questions

Who was Ninnidh Láimhdhearg?

6th-century bishop and founder of the monastic site at Inishmacsaint

When was Ninnidh Láimhdhearg born?

Ninnidh Láimhdhearg was born in Northern Uí Néill.

Sources & further reading

· Wikipedia: Ninnidh Láimhdhearg

· Wikidata: Q4321445

· DBpedia: Ninnidh

Cite this page

APA: Biography.guide. (2026). Ninnidh Láimhdhearg. https://biography.guide/ninnidh-laimhdhearg/

MLA: "Ninnidh Láimhdhearg." Biography.guide, https://biography.guide/ninnidh-laimhdhearg/.

Chicago: "Ninnidh Láimhdhearg." Biography.guide. https://biography.guide/ninnidh-laimhdhearg/.

Data last updated: 2026-09-20 · Spot an error? Report a correction.

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