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Surname Etymology and Meaning of DEIGNAN

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Name meanings and etymologies are often disputed. The information here is compiled from freely available sources, and no claims whatsoever are made for accuracy, either historical or etymological.

Irish (Roscommon): reduced Anglicized form of Gaelic Ó Duibhgeannáin ‘descendant of Duibhgeannán’, a diminutive of Duibhgeann (see Deegan).

Source: Dictionary of American Family Names (2003)