Mcilvenna Family History
Mcilvenna Surname Meaning
Irish: from Mac Giolla Mheana ‘son of the devotee of (Saint) Meana’. The saint's name is most likely a variant of Méanog.
There may have been confusion with the Scottish Gaelic name Mac Gille Bheathain (see McIlwaine).
Source: Dictionary of American Family Names 2nd edition, 2022
