From an Old English female personal name derived from ēad ‘prosperity, riches’ + gӯð ‘strife’. This was borne by a daughter (961–984) of Edgar the Peaceful. (She was named in accordance with the common Old English practice of repeating name elements within a family.) She spent her short life in a convent, and is regarded as a saint.
Spanish and Aragonese (of Basque origin): habitational name from any of the places in La Rioja, Aragon, and Basque Country named Navarrete, from Basque (spoken in all those areas in pre-Roman times) Nafarrete ‘plateau between two small valleys’, a derivative of naba (see Nava, Navarra).