Fennessy Family History
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Fennessy Name Meaning
Irish: reduced Anglicized form of Gaelic Ó Fionnghusa ‘descendant of Fionnghus’, a personal name composed of the elements fionn ‘fair’, ‘white’ + gus ‘vigor’, ‘force’.
Source: Dictionary of American Family Names ©2013, Oxford University Press
Similar surnames: Hennessy, Finnerty, Fennell, Dennehy, Kennedy, Feeney, Hennelly