Save Type Surname (from given name) Usage Irish Pronounced Pron. /ˈmɜɹ.fi/(American English) /ˈmɜː.fi/(British English) [key·simplify] Meaning & HistoryExpand Links Anglicized form of Irish Ó Murchadha meaning "descendant of Murchadh". This is the most common Irish surname. Related NamesDetails RootMurchadh (given name)VariantsMurdock, Ó MurchadhaOther Languages & CulturesMurdoch(Scottish) Categories anglicizations, brand names, child actors, comedians, folk heroes, guitarists, isograms, Jamaican sprinters, Kennedy family, NBA players, Saturday Night Live cast, skiffle