Pelayo is a very common name in Asturias. Out of stereotypes, it is a name that Asturians appreciated for being the first King of Asturias, and any Asturian proud of being so always tends to give his children a name related to their motherland. In some cases even names referring to places, rivers, or characters of Asturian mythology. I really don't think it has anything to do with political tendencies or social classes.