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San Mateo.

Headword: 
San Mateo.
Principal English Translation: 

both a personal name (male) and a place name (referring to the patron saint, Matthew, taken by a given community); eventually, when used as a personal name, the San before the Mateo would be dropped, resulting in what would appear to be two given names, such as Juan Mateo; the use of the full "de San Mateo," something like a surname, was more characteristic of the 16th c.

Orthographic Variants: 
Sanc Mateo