the surname of Nancy is Chavidas. Chavidas is a spanish surname, the root of chavidas is chav which is hebrew for life. Thus, the name chavidas is sefardim from the south of spain, the sefardim are a hebrew tribe, they were decendents of the tribe of safar a hebrew tribe in the south of yemen on the arabian peninsula, the men of the tribe were merchants and their merchant activities spread outside the arabian peninsula all the way to spain. Later on it spread to the hispanola in the carribbean and to mexico and to america, as people began to immigrate to the new worlds.