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.
Hungarian (Benkó or Benkő), Slovak, Slovenian, and Ukrainian: from a pet form of a personal name derived from Latin Benedictus, e.g. Hungarian Benedek, Slovak Beňadik, Slovenian Benedikt, Ukrainian Benedykt (see Benedict).