Jan August's birth name is Jan Auggustoff.
Jan Maervoet's birth name is Jan I Maervoet.
Jan Seybold's birth name is Jan Niebuhr.
Jan Skene's birth name is Jan Anderes.
Jan Kaplicky's birth name is Jan Kaplick.
Jan Kounen's birth name is Coenen, Jan.
Jan Ainley's birth name is Jan Porter.
Jan Falk's birth name is Jan Lampkins.
Jan Arvan's birth name is Jan Arvanitas.
Jan Bielicz's birth name is Jan Toltyzewski.
Jan Broberg's birth name is Jan Broberg.
Jan Zdrojewski's birth name is Jan Soldenhoff.
Jan Vrijman's birth name is Jan Hulsebos.