Moriarty Family History
Moriarty Name Meaning
Irish (Kerry): Anglicized form of Gaelic Ó Muircheartaigh ‘descendant of Muircheartach’ a personal name from muir ‘sea’ + ceardach ‘skilled’ i.e. ‘skilled navigator’. A Meath and Monaghan name of the same form in Irish is Anglicized as Murtagh comparable to Scottish Murdoch . It may also be a shortened form of Gaelic Mac Muircheartaigh ‘son of Muircheartach’ see McMurdie .
Source: Dictionary of American Family Names ©2013, Oxford University Press