From an Irish surname which was derived from Ó Gallchobhair meaning 'descendent of Gallchobhar '. Gallagher is a modern version of the Gaelic name 'O' Gallchobhair'. The 'O' means 'son of' and the 'Gallchobhair' is a derivative of the words 'gall', meaning 'foreign', and the word 'cabhair', which means help. It could possibly have been a clan name for foreign mercenaries.
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Gallagher name meaning. The meaning, origin, popularity and detailed name information of Gallagher.
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