Transferred use of the Scottish surname, now used as a given name throughout the English-speaking world. In the 20th century it was particularly popular in Australia. The surname was originally a Norman baronial name, but a precise identification of the place from which it was derived has not been made (there are a large number of possible candidates). The Bruces were an influential Norman family in Scottish affairs in the early Middle Ages; its most famous member was Robert ‘the Bruce’ (1274–1329), who is said to have drawn inspiration after his defeat at Methven from the perseverance of a spider in repeatedly climbing up again after being knocked down. He ruled Scotland as King Robert I from 1306 to 1329.
French (Huguenot): from Old French osier ‘osier’, ‘willow’, with the preposition d(e) ‘from’, applied as a topographic name for someone who lived near a plantation of willows, or perhaps as a metonymic occupational name for a basket maker.