Hi all- My grand-mother's maiden name is Quidera. We always thought it was spanish but turned out to be portuguese. I have researched the last name to try and find more information such as it's history but no luck. My uncle went to Portugal many years ago and said the name Quidera being common as a last name along with it being used for names of businesses. Does anyone know if there is a town or city in Portugual named Quidera or what the history of the last name is. Any information would be greatly appreciated. Thank you !!