Janus Family History
Janus Surname Meaning
Polish (also Januś); Czech and Slovak (also Januš): from the personal name Janus Januś Januš derivatives of Jan Slovak Ján. Slovenian (Januš): from a variant of the personal name Janez (see John) derived from the Hungarian equivalent János (see Janos).
German and Dutch: from a vernacular form of the personal name Johannes or from a Latinized form of Jan. German: from the Slavic personal name Janus or Januš (see 1 above).
Source: Dictionary of American Family Names 2nd edition, 2022
