Casanova in Dresden (Malunterreicht) ist nicht der casanova

aus http://www.dickinson.edu/~emery/History.htm:
"The library was under the supervision of Herr Jacob Casanuova, a Venetian, and the brother of the two famous artists, the great battle-painter Franz Casanuova of Vienna, and of the famous Academy director Joseph [sic; he means Giovanni] Casanuova of Dresden, who died a few years ago."