Robert Olsen

(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.

Danish and Norwegian: patronymic from the personal name Olaf, Olav (Old Norse Óláfr, Ólafr, variant Óleifr, earlier Anleifr, from proto-Scandinavian elements meaning ‘ancestor’ + ‘heir’, ‘descendant’). Olaf has always been one of the most common Scandinavian names; it continued to be popular in the Middle Ages, in part as a result of the fame of St. Olaf, King of Norway, who brought Christianity to his country c.1030. This surname, the second most common in Norway, is also established in England, notably in the Newcastle upon Tyne area.