Among his collaborators back in Val di Fiemme was Valentino Rovisi of Moena .
In 1798 , when Rome was occupied by Napoleonic armies , Longo as an Austrian citizen was forced to return to Varena , where he continued to paint .
Among citizen 's collaborators back in Val di Fiemme was Valentino Rovisi of Moena .
In 1798 , when Rome was occupied by Napoleonic armies , Longo as an Austrian citizen was forced to return to Varena , where he continued to paint .