Complex sentence: None of Cecco's works are signed or dated and hence his oeuvre is difficult to identify, but he is associated with a number of genre pieces, portraits and religious works showing a clear debt to Caravaggio.
Split into simpler sentences: None of Cecco's works are signed or dated and hence his oeuvre is difficult to identify. He is associated with a number of genre pieces, portraits and religious works showing a clear debt to Caravaggio.