Costello Family History
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Costello Name Meaning
Irish: reduced Anglicized form of Gaelic Mac Oisdealbhaigh ‘son of Oisdealbhach’, a personal name composed of the elements os ‘deer’, ‘fawn’ + dealbhach ‘in the form of’, ‘resembling’.
Source: Dictionary of American Family Names ©2013, Oxford University Press
Similar surnames: Castell, Castellon, Morello, Covello, Corsello, Castello, Connell