Molloy
An Irish surname usually explained as meaning “servant” or “disciple” of a noble or good person.
The #4,868 most common surname in the United States (2010 Census) — about 1 in every 42,656 Americans shares it.
Etymology
The best-known explanation connects Molloy with Irish Gaelic Maolmhuaidh or Maelmhuaidh, analyzed as maol/mael, meaning “servant” or “disciple,” plus the genitive of muadh, “noble” or “good.” That gives a sense of “disciple of the noble/good one,” or more loosely “devotee of a noble person.” One older source instead proposed a Cornish Brittonic explanation relating the name to a “dusty or hoary mill,” but this is not the usual modern interpretation.
History
Molloy is a well-established Irish surname, and 19th-century dictionaries consistently group it with other names built on maol-, a common Irish naming element. Historical spellings and anglicized forms vary, including Mulloy and Moloy, and related reference works often cross-reference it with forms like Logue in the wider network of Irish surnames. The name is found chiefly in Ireland and in Irish diaspora communities.
Origin
Regions
Variant spellings
Fun fact
Some older surname books tried to connect Molloy with a mill-based word, but Irish etymology won out in later scholarship.
From the historical record
“MOLLOCK = Mullock, q.v. MOLLOY (Celt.) Servant or Disciple of THE Noble or Good [Ir. Maolmhuaidh or Maelmhuaidh {mh, dh mute) --maol or mael, servant, disciple + the genit. of muadh, noble, good] MOLONEY! .«' i^„<.„ r, „ MOLONY I = Maloney, q.v.”
— Surnames of the United Kingdom: a concise etymological dictionary (2 vols in 1)