Da Costa Family History
Da Costa Name Meaning
Portuguese and Galician (also Dacosta): variant of Costa with the addition of da a shortened form of the preposition de ‘from’ and the feminine definite article a ‘the’. Compare D'Costa . Jewish (Sephardic): adoption of the Portuguese surname (see 1 above) at the moment of conversion to Roman Catholicism. After the return to Judaism (generations later) some descendants retained the name their families used as Catholics.
Source: Dictionary of American Family Names ©2013, Oxford University Press