Ragnvaldr

Old Norse name composed of the elements regin "advice, counsel" and valdr "power, ruler" (making it a cognate of REYNOLD).

REYNOLD   male   English
From the Germanic name Raginald, composed of the elements ragin "advice" and wald "rule". The Normans (who used forms like Reinald or Reinold) brought the name to Britain, where it reinforced rare Old English and Norse cognates already in existence. It was common during the Middle Ages, but became more rare after the 15th century.
EQUIVALENTS
ANCIENT GERMANIC: Raginald, Reinald, Reinhold
DANISH: Ragnvald
DUTCH: Reinoud, Reinout
ENGLISH: Reginald, Reynold, Ronald
FINNISH: Reino
FRENCH: Renaud, Reynaud
GERMAN: Reinhold
IRISH: Raghnall
ITALIAN: Rinaldo
NORWEGIAN: Ragnvald
PORTUGUESE: Reinaldo, Reynaldo, Ronaldo
SCOTTISH: Raghnall, Ranald, Ronald
SPANISH: Reinaldo, Reynaldo
SWEDISH: Ragnvald
WELSH: Rheinallt
DIMINUTIVES AND SHORT FORMS
ENGLISH: Reg, Reggie, Ron, Ronnie, Ronny
FEMININE FORMS
ENGLISH: Ronnette
SCOTTISH: Ronalda