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7/27/2015, 11:23 PM Mike C update #90
12/3/2014, 12:28 AM Mike C update #89
5/30/2011, 5:41 PM Mike C earliest recorded revision

Type Surname (from given name)
Usage Irish

Meaning & History

From Irish Ó Manacháin meaning "descendant of Manacháin". The given name Manacháin meant "little monk", from manach "monk" and a diminutive suffix.