From the Old Norse personal name Rögnvaldr (composed of regin ‘advice, decision’ (also, ‘the gods’) + valdr ‘ruler’). This name was regularly used in the Middle Ages in northern England and Scotland, where Scandinavian influence was strong. It is now widespread throughout the English-speaking world.
English: occupational name for an outrider, from Middle English rid(en) ‘to ride’ + out ‘out’, ‘forth’. An outrider (Middle English outridere) was an officer of a sheriff's court or of a monastery whose duties included riding out to collect dues and supervise manors.