Great Council of Venice
In 1243 he was engaged with his brother in a long dispute with the Republic of Venice. During the campaign of 1207, the island of Andros had been assigned to Marino Dandolo but at an unknown date (probably between 1238 and 1239), Geremia had seized it by force. Dandolo appealed to the Venetian government but died soon after. This, however, did not prevent the Great Council of Venice on 11 August 1243 from condemning the Ghisi brothers to confiscation of their property, and ordering the Doge of Venice Jacopo Tiepolo to force the restitution of the island. Andrea and Geremia were also ordered to present themselves before the Doge and submit to the Council's decision by 29 June 1244, on pain of exile from Venice and the auctioning of their possessions for the benefit of the dispossessed Dandolo family.