I Porto (or Porto) is a noble family originally from Vicenza. Cutaway gold and blue, to the ruffled band of silver, crossing over the partition, and accompanied on the head by a double-headed eagle of black, rostrata and red-colored, each head crowned with gold. The ports were one of the main families that dominated the Vicenza Committee since the beginning of the tenth century, as vicecomites (vassals) among the most influential of the bishop, being aggregated to the noble Council of Vicenza.
Under the emperor Henry V, for the many services rendered to the Empire, the Port had the privilege of having the imperial eagle in the family weapon. On December 14, 1532, Carlo V issued a diploma with which he raised the castle of Vivaro di Dueville and Val Leogra in the county, located in the Vicenza area with the extension and collation of the title of Count of Vivaro and the rank of Cavalieri aurati to each branch of them and their male ancestry. These titles were confirmed by the Venetian Senate September 26, 1729 and March 17, 1730. Another title due to the family is that of Nobile (Vicenza).
Fra 'Alessandro da Porto held the position of Grand Prior of the Great Pietà of Lombardy and Venice of the Sovereign Military Order of Malta between 1937 and 1958. The ports were among the principal patrons of Andrea Palladio, together with the Trissino, the Thiene, the Chiericati, the Angaran and the Barbaro.