Who is Benedetto Trovato? Regina v Starkie (1) Crown Court : Season 1 Episode 31

Art collector Walter Lander purchased an extremely valuable painting from British collector Alice Starkie. When he announced his purchase to the art world, another collector came forward to claim that he has had the original painting for several years, and that Lander's purchase must be a fake. Alice Starkie is charged with obtaining money by deception, but claims she sold the painting in good faith, believing it to be the original. Is she telling the truth?