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.
Italian: 1. from an old Tuscan personal name, Saccus, a reduced form of the Old Testament name Isaccus (see Isaac). 2. metonymic occupational name for a maker of sacks or bags, from sacco ‘sack’, or nickname for someone thought to resemble a sack. 3. habitational name from Sacco in Salerno province.