How old was Frederic Zelnik in Mary Lou?

Lya MaraLya Mara was 31 in Mary Lou as 'Mary-Lou'.

Birthday: Sun, Aug 01 1897 –
Tue, Mar 01 1960

Fritz KampersFritz Kampers was 37 in Mary Lou as 'Belloni'.

Birthday: Tue, Jul 14 1891 –
Fri, Sep 01 1950

Adele SandrockAdele Sandrock was 65 in Mary Lou as 'Frau Belloni'.

Birthday: Wed, Aug 19 1863 –
Mon, Aug 30 1937

Hans MierendorffHans Mierendorff was 46 in Mary Lou as 'Großfürst Dimitri'.

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

S.Z. SakallS.Z. Sakall was 45 in Mary Lou as 'Der Jongleur'.

Birthday: Thu, Feb 01 1883 –
Sat, Feb 12 1955

Frederic ZelnikFrederic Zelnik was 43 in Mary Lou as 'Director'

Birthday: Sun, May 17 1885 –
Wed, Nov 29 1950

Arthur MartinelliArthur Martinelli was 47 in Mary Lou as 'Director of Photography'

Birthday: Fri, Apr 29 1881 –
Thu, Sep 07 1967

Fanny CarlsenFanny Carlsen was >> in Mary Lou as 'Writer'

Birthday: Unknown Birthday

Andrej AndrejewAndrej Andrejew was 41 in Mary Lou as 'Art Direction'

Birthday: Fri, Jan 21 1887 –
Mon, Mar 13 1967