Robert Green

(male) One of the many French names of Germanic origin that were introduced into Britain by the Normans; it has since remained in continuous use. It is derived from the nearly synonymous elements hrōd ‘fame’ + berht ‘bright, famous’, and had a native Old English predecessor of similar form (Hreodbeorht), which was supplanted by the Norman name. Two dukes of Normandy in the 11th century bore the name: the father of William the Conqueror (sometimes identified with the legendary Robert the Devil), and his eldest son. It was borne also by three kings of Scotland, notably Robert the Bruce (1274–1329), who freed Scotland from English domination. The altered short form Bob is very common, but Hob and Dob, which were common in the Middle Ages and gave rise to surnames, are extinct. See also Rupert.

English: one of the most common and widespread of English surnames, either a nickname for someone who was fond of dressing in this color (Old English grēne) or who had played the part of the ‘Green Man’ in the May Day celebrations, or a topographic name for someone who lived near a village green, Middle English grene (a transferred use of the color term). In North America this name has no doubt assimilated cognates from other European languages, notably German Grün (see Gruen).