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Number of families in Co Mayo, Ireland with this surname.
Many emigrated to the US in the early 20th Century.
Settled in the Boston area.
Gaelic version of the name is O Cadhain. (meaning goose)
May also be spelled Barnacle.
Other versions of the name are Coyne, Kyne or Kien all derived from the Gaelic version.
Barnicle families to be found in Mayo, Sligo, Dublin and other counties in Ireland. A Barnicle family lives in Bergamo, Italy.