Vázquez ranks eighth in Ourense Province with 101,776 occurrences across 304 municipalities. A patronymic from "Vasco" — a name of Basque origin meaning "crow" or possibly "from the Basques" — the surname reflects the deep cultural exchanges between the Basque and Galician regions throughout the medieval period.

In the Ribeiro wine region, Vázquez maintains a remarkably even distribution: Cenlle leads with 5.44%, followed by Leiro (5.84%), Beade (4.69%), Castrelo de Miño (3.87%), Ribadavia (3.73%), Arnoia (3.82%), and Cartelle (3.70%). This uniformity across all seven municipalities is unusual and suggests an ancient, well-established presence predating late-medieval migration patterns.

The most striking feature of the Vázquez surname in this region is its Inquisition record frequency: 12.07% in Ribadavia, the highest of any surname tracked in this project. This strong presence in converso records points to significant Vázquez involvement in the medieval Jewish community of Ribadavia.