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Surname Etymology and Meaning of MURTAGH

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Name meanings and etymologies are often disputed. The information here is compiled from freely available sources, and no claims whatsoever are made for accuracy, either historical or etymological.

1. (Meath and Monaghan) Anglicized form of Gaelic Ó Muircheartaigh ‘descendant of Muircheartach’, a personal name from muir ‘sea’ + ceardach ‘skilled’, i.e. ‘skilled navigator’. A Kerry surname of the same form is Anglicized as Moriarty.
2. (County Roscommon) Anglicized form of Mac Muircheartaigh (originally Anglicized as MacMoriarty) (see McMurtry).
3. (Ulster): sometimes of Scottish origin, an alternative to Murdock.

Source: Dictionary of American Family Names (2003)