Crehan Family History
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Crehan Name Meaning
(Sligo) Anglicized form of Gaelic Ó Croidheáin ‘descendant of Croidheán’, from a diminutive of croidhe ‘heart’. Compare Creegan. (originally Mayo and Tyrone) Anglicized form of Gaelic Ó Creacháin or Ó Criocháin, from a diminutive of creach ‘blind’.
Source: Dictionary of American Family Names ©2013, Oxford University Press