55%RatingSave Gender Masculine Usage Germanic [1] Meaning & HistoryExpand Links Old German form of Rein. Related NamesFamily Tree·Details RootreginOther Languages & CulturesRein, Rien(Dutch) Rein(Estonian) Rein(Frisian) User SubmissionRegin Categories isograms, wisdom Sources & References Förstemann, Ernst. Altdeutsches Namenbuch. Bonn, 1900, page 1221.