What does the last name Castaneda mean?

this is a name of French origins but found throughout Southern Europe. It derives originally from the Olde French Word 'castanh', itself from the Latin (Roman) 'castanea' and translates as 'chestnut'. The surname is either a nickname for a person with auburn hair, unusual in itself amongst the very dark haired southern europeans, or it may be residential or occupational and describe a person who either lived by, or was responsible for the management of, a chestnut grove.