Meaning and history
Murtagh is an Anglicized Irish name derived from Muircheartach. The Gaelic compound combines muir, “sea,” with a second element associated with skill or rulership, and is traditionally interpreted as “skilled seafarer” or “sea warrior,” though translations vary. It has functioned as both a personal name and surname. Historical bearers include Muircheartach Ua Briain, often Anglicized Murtagh O’Brien, a medieval king of Munster and claimant to the high kingship of Ireland.