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Updated June 9, 2019

Family name origins & meanings

  • Irish : reduced form of O’Slowey, an Anglicized form of Gaelic Ó Sluaghadhaigh ‘descendant of Sluaghadhach’, a personal name meaning ‘raider’, derived from sluaghadh ‘expedition’, ‘raid’. In Ulster there was also Mac Sluaghaigh, which was Anglicized as (Mc)Slowey or sometimes Molloy.

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