Scottish (Dumbartonshire) and Irish (Westmeath): Anglicized
form of Gaelic Mac Amhalghaidh ‘son of Amhalghadh’, a
personal name of uncertain origin.
Scottish (Hebrides) and Irish
(Fermanagh): Anglicized form of Gaelic Mac Amhlaoibh or Mac
Amhlaidh ‘son of Olaf’, from Gaelic forms of the Old Norse
personal name Áleifr, Óláfr. Compare
McAuliffe.
Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4
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