original_query: What is the origin of the surname Zambrano?
query: What is the origin of the surname Zambrano?
answer: The surname Zambrano is of Spanish and Basque origin, stemming from the word "soberano" (sovereign).  The family originated in the mountains of Biscay, with the first known bearer being Fortun Sanchez.  The village of Zambrana in Gipuzkoa province was even named after the family.