It is a surname of Spanish origin. It is popular in Chile. There is also Montesino, Montecinos and Montesinos. It is of Valencian origin. It means that it comes from the mountain, mountaineer, mountaineer, mountaineer. Montaraz, montuno. It can be taken, as an indicator of fearful, elusive, huraño, rough. Last name of a Chilean writer and anthropologist named Sonia Cristina Montecino Aguirre. Name of an Italian village in Tuscany.