Irish: reduced Anglicized form of two distinct Gaelic names, which
have now become confused: Ó Cuinneáin ‘descendant of
Cuinneán’, a personal name from a diminutive of conn
‘chief’, and Ó Cuineáin ‘descendant of
Cuineán’, a personal name from a diminutive of cana
‘whelp’.
Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4
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