México and Filipinas was the same country for about 300 year. The Viceroyalty of New Spain was constituid for Cuba, Puerto Rico Florida, Mexico, Filipinas, Guam, Texas, California, New Mexico, Arizona, Utah, Washington, etc. The Capital was Mexico City.
The next pic was the map of New Spain:
https://es.wikipedia.org/wiki/Virrei...:New_Spain.svg
I had never know about that last name, but, yes is a spanish word. Maybe someone was a magistrate and take that last name, its a common form to make lastnames.
In fact most of the people who colonized Filipinas wasn´t Spanish People, was people from the actual México, filipinos people and mexican people has a lot in common, the south part of México where Nao de China (ship) departed, look like asian people from the people who came from the Capitania de Filipinas.