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GLASHEEN Family HistoryThis unusual surname, almost exclusive to the Munster county of Tipperary, is an Anglicized form of the Old Gaelic "O'Glaisin", descendant of Glaisin, a male given name from a root word "glas", variously interpreted as "grey-green in colour", and "callow, inexperienced", thereby implying either a wan, pale-complexioned person, or one lacking in experience of life. The "O'Glaisin" sept originated in South West Cork which strongly suggests a connection with the O'Gliasain (earlier O'Glasain) sept now nglicized Gleeson. The Gleesons belong to Mac Ui Bhriain Aradh's county between Nenagh and Lough Derg in County Tipperary, but, like the O'Glaisin sept, they too were of County Cork stock, originating in Muskerry (north-west and central Cork)...
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