
Inisheer ( , or ) is the smallest and most easterly of the three
Aran Islands
The Aran Islands ( ; , ) or The Arans ( ) are a group of three islands at the mouth of Galway Bay, off the west coast of Republic of Ireland, Ireland, with a total area around . They constitute the historic barony (Ireland), barony of Aran in ...
in
Galway Bay
Galway Bay ( Irish: ''Loch Lurgain'' or ''Cuan na Gaillimhe'') is a bay on the west coast of Ireland, between County Galway in the province of Connacht to the north and the Burren in County Clare in the province of Munster to the south; Galway ...
, Ireland. With 343 residents as of the
2022 census,
it is second-most populous of the Arans.
Caomhán of Inis Oírr is the island's
patron saint
A patron saint, patroness saint, patron hallow or heavenly protector is a saint who in Catholicism, Anglicanism, Eastern Orthodoxy or Oriental Orthodoxy is regarded as the heavenly advocate of a nation, place, craft, activity, class, clan, fa ...
. There are five small settlements: Baile Thiar, Chapeltown (Baile an tSéipéil), Castle Village (Baile an Chaisleáin), Baile an Fhormna and Baile an Lorgain. The island is in a
civil parish
In England, a civil parish is a type of administrative parish used for local government. It is a territorial designation which is the lowest tier of local government. Civil parishes can trace their origin to the ancient system of parishes, w ...
of the same name.
Name
The island was originally called ''Árainn Airthir'', and later ''Inis Oirthir'', which are thought to mean "eastern Aran" and "eastern island" respectively.
[ (see scanned records)] The second element is also found in the names
Inishsirrer and
Orior. According to Séamas Ó Murchú, the current official name, , was brought into use by the
Ordnance Survey Ireland
Ordnance Survey Ireland (OSI; ) was the national mapping agency of the Republic of Ireland. It was established on 4 March 2002 as a body corporate. It was the successor to the former Ordnance Survey of Ireland. It and the Ordnance Survey of ...
. He says it may be a compromise between and the traditional local name .
Geology and geography
The island is geologically an extension of
The Burren
The Burren ( ; ) is a karst/glaciokarst landscape centred in County Clare, on the west coast of Republic of Ireland, Ireland. . The terrain of the island is composed of
limestone
Limestone is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime (material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science) ...
pavements with crisscrossing cracks known as "grikes", leaving isolated rocks called "clints".
The limestones date from the
Viséan
The Visean, Viséan or Visian is an age in the ICS geologic timescale or a stage in the stratigraphic column. It is the second stage of the Mississippian, the lower subsystem of the Carboniferous. The Visean lasted from to Ma. It follows ...
period (Lower Carboniferous), formed as sediments in a tropical sea approximately 350 million years ago, and compressed into horizontal strata with fossil
coral
Corals are colonial marine invertebrates within the subphylum Anthozoa of the phylum Cnidaria. They typically form compact Colony (biology), colonies of many identical individual polyp (zoology), polyps. Coral species include the important Coral ...
s,
crinoid
Crinoids are marine invertebrates that make up the class Crinoidea. Crinoids that remain attached to the sea floor by a stalk in their adult form are commonly called sea lilies, while the unstalked forms, called feather stars or comatulids, are ...
s,
sea urchin
Sea urchins or urchins () are echinoderms in the class (biology), class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal zone to deep seas of . They typically have a globular body cove ...
s and
ammonites
Ammonoids are extinct, (typically) coiled-shelled cephalopods comprising the subclass Ammonoidea. They are more closely related to living octopuses, squid, and cuttlefish (which comprise the clade Coleoidea) than they are to nautiluses (family N ...
.
Glaciation following the
Namurian
The Namurian is a stage in the regional stratigraphy of northwest Europe, with an age between roughly 331 and 319 Ma (million years ago). It is a subdivision of the Carboniferous system or period, as well as the regional Silesian series. The Na ...
phase facilitated greater denudation. The result is that Inisheer is one of the finest examples of a Glacio-
Karst
Karst () is a topography formed from the dissolution of soluble carbonate rocks such as limestone and Dolomite (rock), dolomite. It is characterized by features like poljes above and drainage systems with sinkholes and caves underground. Ther ...
landscape in the world. The effects of the
last glacial period (the Midlandian) are most in evidence, with the island overrun by ice during this glaciation. The impact of earlier
Karstification (solutional erosion) has been eliminated by the last glacial period, so any Karstification now seen dates from approximately 10,000 years ago and the island Karst is thus recent.
Solutional processes have widened and deepened the limestone pavement. Pre-existing lines of weakness in the rock (vertical joints) contribute to the formation of extensive fissures separated by clints (flat pavement-like slabs). The rock karstification facilitates the formation of subterranean drainage.
Climate and agriculture
The island has a temperate climate. Average air temperatures range from 15 °C (59 °F) in July to 6 °C (43 °F) in January. The soil temperature does not usually drop below 6 °C (43 °F). Since grass will grow once the temperature rises above 6 °C (43 °F), this means that the island (like the neighbouring
Burren) has one of the longest growing seasons in Ireland, and supports diverse and rich plant growth.
Late May is the sunniest time, and also likely the best time to view flowers, with the gentians and avens peaking (but orchid species blooming later).
Flora and fauna
The island supports
arctic
The Arctic (; . ) is the polar regions of Earth, polar region of Earth that surrounds the North Pole, lying within the Arctic Circle. The Arctic region, from the IERS Reference Meridian travelling east, consists of parts of northern Norway ( ...
,
Mediterranean
The Mediterranean Sea ( ) is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean basin and almost completely enclosed by land: on the east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern ...
and
alpine plants side-by-side, due to the unusual environment. Like the Burren, the Aran islands are known for their remarkable assemblage of plants and animals.
The grikes (crevices) provide moist shelter, thus supporting a wide range of plants including dwarf shrubs. Where the surface of the pavement is shattered into gravel, many of the hardier Arctic or alpine plants can be found. But when the limestone pavement is covered by a thin layer of soil, patches of grass are seen, interspersed with plants like the gentian and orchids.
Notable insects present include the butterfly the
pearl-bordered fritillary (''Boloria euphrosyne''),
brown hairstreak (''Thecla betulae''),
marsh fritillary
The marsh fritillary (''Euphydryas aurinia'') is a butterfly of the family Nymphalidae. Commonly distributed in the Palearctic region, the marsh fritillary's common name derives from one of its several habitats, marshland. The prolonged larval st ...
(''Euphydryas aurinia'') and
wood white (''Leptidea sinapis''); the moths, the
burren green (''Calamia tridens''),
Irish annulet (''Gnophos dumetata'') and
transparent burnet (''Zygaena purpuralis''); and the hoverfly ''
Doros profuges''.
History
In 1885 a burial site called
Cnoc Raithní was discovered which dates back to 1500 BC. This is the earliest evidence of human settlement of the island.
Saint Caomhán, the patron saint of Inisheer, according to some traditions, was the elder brother of
Kevin of Glendalough in County Wicklow. The ruins of the 10th century ''Teampall Chaomháin'' in Inisheer cemetery have to be uncovered annually as the floor of it is well below the level of the sand. In the Middle Ages, the island was ruled by the
O'Brien dynasty
The O'Brien dynasty (; ; genitive ''Uí Bhriain'' ) was an Irish Clan and noble house of Munster, founded in the 10th century by Brian Boru of the Dál gCais (Dalcassians). After becoming King of Munster, through conquest he established hims ...
who provided most of the
Kings of Thomond
The kings of Thomond () ruled from the establishment of Thomond during the High Middle Ages, until the Early modern period. Thomond represented the legacy of Brian Bóruma and the High Kings of Ireland of his line who could not hold onto all ...
. This rule was exercised before the
Anglo-Irish
Anglo-Irish people () denotes an ethnic, social and religious grouping who are mostly the descendants and successors of the English Protestant Ascendancy in Ireland. They mostly belong to the Anglican Church of Ireland, which was the State rel ...
settled in
Connacht
Connacht or Connaught ( ; or ), is the smallest of the four provinces of Ireland, situated in the west of Ireland. Until the ninth century it consisted of several independent major Gaelic kingdoms (Uí Fiachrach, Uí Briúin, Uí Maine, C ...
in the 1230s.
The Tribes of Galway
The Tribes of Galway () were 14 merchant families who dominated the political, commercial and social life of the city of Galway in western Ireland between the mid-13th and late 19th centuries. They were the families of Athy, Blake, Bodkin, Brown ...
paid the O'Briens an annual tribute of twelve tuns of
wine
Wine is an alcoholic drink made from Fermentation in winemaking, fermented fruit. Yeast in winemaking, Yeast consumes the sugar in the fruit and converts it to ethanol and carbon dioxide, releasing heat in the process. Wine is most often made f ...
"in consideration of their protection and expenses in guarding the bay and harbour of Galway against pirates and coast plunderers." The remains of the 14th-century '
O'Brien's Castle' are sited near the island's highest point. In 1582 the
O'Flahertys of
Connemara
Connemara ( ; ) is a region on the Atlantic Ocean, Atlantic coast of western County Galway, in the west of Ireland. The area has a strong association with traditional Irish culture and contains much of the Connacht Irish-speaking Gaeltacht, ...
captured it. Today O'Flahertys still live on the island. In 1652 it was given to the Cromwellian invasion force and the O'Flahertys were defeated. They saw no use for it and the castle was partially dismantled, it has been unoccupied since.

The cargo vessel
MV ''Plassy'', which was shipwrecked off Inis Oírr on 8 March 1960,
has since been thrown above the high tide mark at ''Carraig na Finise'' on the island by strong
Atlantic
The Atlantic Ocean is the second largest of the world's five oceanic divisions, with an area of about . It covers approximately 17% of Earth's surface and about 24% of its water surface area. During the Age of Discovery, it was known for se ...
waves. The wreck features in the opening credits of the TV show ''
Father Ted
''Father Ted'' is a sitcom created by Irish writers Graham Linehan and Arthur Mathews (writer), Arthur Mathews and produced by British production company Hat Trick Productions for British television channel Channel 4. It aired over three seri ...
''.
On the night of the wrecking, a young boy on the island spotted the grounded ship and ran to the village, where the alarm was raised.
Approximately sixty islanders, including the
Inisheer Rocket Crew, rescued the entire crew from the stricken vessel using a
breeches buoy
A breeches buoy is a rope-based rescue device used to extract people from wrecked vessels, or to transfer people from one place to another in situations of danger. The device resembles a round emergency personal flotation device with a leg harne ...
;
an event captured in a pictorial display at the
National Maritime Museum
The National Maritime Museum (NMM) is a maritime museum in Greenwich, London. It is part of Royal Museums Greenwich, a network of museums in the Maritime Greenwich World Heritage Site. Like other publicly funded national museums in the Unit ...
in
Dún Laoghaire
Dún Laoghaire ( , ) is a suburban coastal town in County Dublin in Ireland. It is the administrative centre of the county of Dún Laoghaire–Rathdown. The town was built up alongside a small existing settlement following 1816 legislation th ...
.
Antiquities
The following sites on the island are designated as
National Monuments:
*
Creggankeel Fort (NM 41.01)
*
Grave of the Seven Daughters (NM 41.02)
*
St. Gobnet's Church (NM 41.05)
*
Cnoc Raithní (NM 41.06)
*
O'Brien's Castle (NM 41.07)
*
St. Cavan's Church (NM 41.08)
Demographics
The table below reports data on Inis Oírr's population taken from ''Discover the Islands of Ireland'' (Alex Ritsema, Collins Press, 1999) and the
Census
A census (from Latin ''censere'', 'to assess') is the procedure of systematically acquiring, recording, and calculating population information about the members of a given Statistical population, population, usually displayed in the form of stati ...
of Ireland. Census data in Ireland before 1841 are not considered complete and/or reliable.
Transport
The island is reached by ferry from
Rossaveal in
Connemara
Connemara ( ; ) is a region on the Atlantic Ocean, Atlantic coast of western County Galway, in the west of Ireland. The area has a strong association with traditional Irish culture and contains much of the Connacht Irish-speaking Gaeltacht, ...
and
Doolin
Doolin () is a coastal village in County Clare, Ireland, on the Atlantic coast. It is southwest of the spa town of Lisdoonvarna and 4 miles from the Cliffs of Moher. It is a noted centre of traditional Irish music, which is played nightly in ...
in
County Clare
County Clare () is a Counties of Ireland, county in the Provinces of Ireland, province of Munster in the Southern Region, Ireland, Southern part of Republic of Ireland, Ireland, bordered on the west by the Atlantic Ocean. Clare County Council ...
as well as from the other Aran Islands. There is also a regional airport on each island which is served from Connemara Regional Airport by AerArann. A pier was opened in Doolin in June 2015 for commercial ferries serving the island. Islanders travel by foot or car around the island. Tourists can avail of tours/taxi trips by horse and trap.
Language
Irish is still today the daily language of the approximately 260 permanent residents. In addition, many school pupils from the mainland come to the island to learn Irish in an environment where it is a living language in the local college, Coláiste Laichtín during the months of June, July and August.
Sport
Some of the limestone sea cliffs have attracted interest from
rock-climbers, though the bigger islands of
Inis Mór and
Inis Meáin
Inishmaan ( ; , the official name, formerly spelled , meaning "middle island") is the middle of the three main Aran Islands in Galway Bay, off the west coast of Ireland. It is part of County Galway in the province of Connacht. Inishmaan has a ...
are more popular.
Diving is possible.
In the media
The island, including shots of the wrecked
MV ''Plassy'', is used to represent the fictional
Craggy Island in the
opening credits
In a motion picture, television program or video game, the opening credits or opening titles are shown at the very beginning and list the most important members of the production. They are now usually shown as text superimposed on a blank scree ...
of the 1990s
sitcom
A sitcom (short for situation comedy or situational comedy) is a genre of comedy produced for radio and television, that centers on a recurring cast of character (arts), characters as they navigate humorous situations within a consistent settin ...
''
Father Ted
''Father Ted'' is a sitcom created by Irish writers Graham Linehan and Arthur Mathews (writer), Arthur Mathews and produced by British production company Hat Trick Productions for British television channel Channel 4. It aired over three seri ...
''.
''Inisheer'' is also the name of a well-known
slow air written by Thomas Walsh from Dublin, after a visit to the island in the 1970s.
Inis Oírr was discussed at length in the work of
cultural anthropologist
Cultural anthropology is a branch of anthropology focused on the study of cultural variation among humans. It is in contrast to social anthropology, which perceives cultural variation as a subset of a posited anthropological constant. The term s ...
John Cowan Messenger under the name
Inis Beag.
Gallery
File:Inisheer pavement.JPG, Limestone pavement
A limestone pavement is a natural karst landform consisting of a flat, incised surface of exposed limestone that resembles an artificial Sidewalk, pavement. The term is mainly used in the UK and Ireland, where many of these landforms have devel ...
File:Inisheer lighthouse.jpg, The lighthouse
A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lens (optics), lenses and to serve as a beacon for navigational aid for maritime pilots at sea or on inland waterways.
Ligh ...
File:Inisheer eastern coast.JPG, Eastern coastline
File:Caomhan nave 2013.JPG, Saint Caomhan's church, viewed from the priest's residence in the west
File:Caomhan church grave 2013.JPG, Saint Caomhan's church with Caomhan's grave (Leaba Caomhan) in the background.
File:Cill Gobnait Inisheer 2013.JPG, Saint Gobnait's church
File:Tobar Fiachra 2013.JPG, Saint Fiachra's holy well near Cill Gobnait.
File:OBrien fort Inisheer 2013.JPG, O'Brien fort near the summit of Inisheer. Northern and western elevations
File:376-0040-hinnerk-ruemenapf inis-oirr.jpg, View walking from pier towards beach / O'Brien's Castle
File:394-0336 arae-eanna -hinnerk-ruemenapf.jpg, Áras Éanna, arts and cultural center
File:394-0365 tobar-eanna hinnerk-ruemenapf.jpg, Tobar Éinne (Tobar Éanna), Saint Enda's holy well on Inis Oirr
File:O'Briens Castle Inisheer 5130.jpg, O'Brien's Castle, built in the 14th century
File:Harbour on Inisheer 03.jpg, The pier in 1991
References
External links
*
Official tourism website for Inis Oírr and the Aran Islands
{{Authority control
Gaeltacht places in County Galway
Civil parishes of County Galway
Aran Islands
Gaeltacht towns and villages