How old was Paul Knepler in Paganini?

Rudolf LampaRudolf Lampa was 51 in Paganini as 'Stage Director'

Birthday: Fri, Sep 01 1905 –
Fri, Apr 28 1989

Franz LehárFranz Lehár would have been no older than 78 in Paganini as 'Music'

Birthday: Sat, Apr 30 1870 –
Sun, Oct 24 1948

Paul KneplerPaul Knepler was 77 in Paganini as 'Opera'

Birthday: Wed, Oct 29 1879 –
Sun, Dec 17 1967

Béla JenbachBéla Jenbach would have been no older than 71 in Paganini as 'Opera'

Birthday: Sat, Apr 01 1871 –
Thu, Jan 21 1943