Bato

The Spanish colonizers, who surveyed the early settlers of the area, recorded the name "Bato" and later this became the town's name. There are several unproven theories when and why the town was named "Bato", like it came from the name of the "water Wells", or it came from the Tagalog word bato, meaning "rock". Another legend states that a Spaniard asked a settler woman the name of the settlement, and she replied "Bato". There is no certainty whether the woman understood the question or not, whether she referred to her own name or the name of the settlement itself, or to their early occupations of the area.

https://en.wikipedia.org/wiki/Bato,_Catanduanes