Naranjo Family History

Spanish: topographic name for someone who lived by an orange grove, from Spanish naranjo ‘orange tree’ (from naranja ‘orange’, Arabic naránjya), or a habitational name from a place named Naranjo in A Coruña and Códoba provinces. (The word orange reached English from Spanish via Old French and Old Provençal, in which languages the initial n- had already been sporadically lost.)

Source: Dictionary of American Family Names ©2013, Oxford University Press