What nationality does the last name "Correia" come from?

Question:

What nationality does the last name "Correia" come from?

Best Answer - Chosen by Asker: Correia

Portuguese: from correia ‘leather strap’, ‘belt’, ‘rein’, ‘shoelace’ (Latin corrigia ‘fastening’, from corrigere ‘to straighten’, ‘to correct’), applied as a metonymic occupational name for a maker or seller of such articles.

Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4

Of course, your great grandmother may have been a Chinese accountant from Macao. Name origins are clues, not facts.