Murtagh Family History
Murtagh Name Meaning
Irish:: midland Anglicized form of Ó Muircheartaigh ‘descendant of Muircheartach’ a personal name meaning ‘navigator’; compare Moriarty in Munster. See also Scottish Murdoch . Variants with a final -ie or -y may also be shortened forms of McMurdie etc. from the same personal name. in Ulster a possible variant of the related Scottish surname Murdoch .
Source: Dictionary of American Family Names ©2013, Oxford University Press