Updated June 9, 2019 Share: Girl name origins & meanings Latin : RulerLatin : Queenly Girl name variations Rain Raine Reign Rayne Rana Rane Raina Ray Regina Reggie Gina Rina Regan Reyna Reine Reina Rani Rexy How Popular Is The Name Rein Family name origins & meanings German : from a short form of any of the various personal names formed with the element ragin ‘counsel’, for example Reinbold, Reinhard (see Reinhardt).German : variant of Rain.German : perhaps a habitational name for someone who lived by the Rhine.