(Teut. or Sax.) From Rein, pure, and ard, nature, disposition; honest, incorrupt.
Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
REINARD
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(Teut. or Sax.) From Rein, pure, and ard, nature, disposition; honest, incorrupt.
Region of origin: Europe
Country of origin: France
Language of origin: French