In 2014, 6.6% of Spaniards were named García. In this map it's the most common name as far south as Andalusia. But English Wikipedia [claims](https://en.wikipedia.org/wiki/Garc%C3%ADa_(surname)) it's Basque in origin. Is that true? If so, does it represent a large Basque-descended population outside the Basque Country? If not, where does this name come from?
Same goes, by the way, for Salazar, a supposedly Basque but not too uncommon name in Galicia, Portugal and Brazil.
