Antonio Gradenigo
Antonio Gradenigo was a Venetian nobleman and one of at least eight sons of Doge Bartolomeo Gradenigo. In 1348 he held office as Venetian count of Arbe, an island in Dalmatia, the coast over which King Louis I of Hungary was then quarrelling with Venice.
His father had sought offices and favours for his sons so flagrantly that after the doge's death in December 1342 the Major Council denied office to a living doge's kin and banned the ducal family from private trade.