How old was Manny Ziener in John Rool?

Hans MierendorffHans Mierendorff was 34 in John Rool as 'Harry Higgs'.

Birthday: Fri, Jun 30 1882 –
Mon, Dec 26 1955

Leopold BauerLeopold Bauer was >> in John Rool as 'John Rool'.

Birthday: Unknown Birthday

Manny ZienerManny Ziener was 28 in John Rool as 'Mabel Hughes'.

Birthday: Wed, Oct 05 1887 –
Thu, May 04 1972

Otto Lins-MorstadtOtto Lins-Morstadt was >> in John Rool

Birthday: Unknown Birthday

Alice FerronAlice Ferron was >> in John Rool

Birthday: Unknown Birthday

Rudolf MeinertRudolf Meinert was 33 in John Rool as 'Director, Writer'

Birthday: Thu, Sep 28 1882 –
Fri, Jan 01 1943