island or archipelago
An Clochoileán
genitive: an Chlochoileáin
non-validated name (What is this?)
Castle Island


54.0221, -7.95167latitude, longitude
Irish Grid (with letter)
Irish Grid (without letter)
Irish Transverse Mercator (ITM)

Historical references

arin Clachoilen
in Clachoilein [g.]
"Fergal Mag Ragnaill taisech Muintiri hEolais do marbad la Mathgamain Mag Ragnaill a derbrathair fein & la dreim da orecht fein per dolum arin Clachoilen, unde fell in Clachoilein."

Please note: Some of the documentation from the archives of the Placenames Branch is available here. It indicates the range of research contributions undertaken by the Branch on this placename over the years. It may not constitute a complete record, and evidence may not be sequenced on the basis of validity. It is on this basis that this material is made available to the public.

Archival and research material provided on this site may be used, subject to acknowledgement. Issues regarding republication or other permissions or copyright should be addressed to

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