Where does the last name Viera comes from?

Question:

Where does the last name Viera comes from?

I just would like to know where does the last name Viera comes from, I dont want websites (unless It'll give me exaclty what I'm looking for) I just want the answer and some history if you dont mind. Thanks

Best Answer - Chosen by Asker: viera
Galician and Spanish: possibly a variant spelling of Vieira. In Spain the surname is found mainly in the island of Tenerife.
Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4

Vieira
religious byname from Portuguese vieria ??scallop?? (Late Latin veneria, a derivative of the name of Venus; the goddess was often depicted riding on a scallop). The scallop was a symbol of the pilgrim who had been to the shrine of Santiago de Compostela.
habitational name from any of numerous minor places called Vieiria.
Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4