Castonguay Family History
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Castonguay Name Meaning
French Canadian: variant of Gastonguay, which is a combination of the first and last names of the first bearer of the name in Canada, Gaston Guay or Gay.
Source: Dictionary of American Family Names ©2013, Oxford University Press
Similar surnames: Tanguay, Hasting, La Tona, Carbonneau, Stanaway, Carton, Antony