Fourth Genoese War (also termed the War of Chiogga).  The Carraras of Padua sided with the Genoans.  Despite being surrounded and near defeat, Venice managed to defeat the Genoese fleet at Chiogga. Exhausted by her wars, Venice elected to cede Treviso and her other mainland possessions to the Duke of Austria, whom she deemed to be less of a long-term threat than the Carraras. Venice retreats to her island fortress.