Murphy
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Murphy is an Anglicized version of two Irish surnames: Ó Murchadha/Ó Murchadh ("descendant of Murchadh"), and Mac Murchaidh/Mac Murchadh ("son of Murchadh") derived from the Irish personal name Murchadh, which meant "sea-warrior" or "sea-battler". (Muir meaning "sea" and cath meaning "battle").