The town got its name from the medicinal herb "dosol" which abound in the locality during the Spanish period. The leaves of this herbal plant are greenish and oval in shape. It is a tuber relatively very low in height. It was commonly used to cure infected wounds, but was found to have the unusual characteristic of miraculously disappearing (abandoning its post) for unknown reason never to be located again. Its name was frequently mispronounced as Dasol by the Spaniards, so that when the place was established as municipality in the 19th Century, Dasol became its official name.
