Antonio made a surprise attack against Attica and captured the lower town of Athens in the first half of 1402. To force him to abandon the siege of the Acropolis, the Senate of Venice ordered
Francesco Bembo, Bailo of Negroponte, to invade Boeotia on 22 August. Instead of lifting the siege, Antonio divided his troops in two groups and ambushed the Venetians in a mountain pass, also capturing Bembo before 2 September. Antonio soon returned to Athens to continue the siege of the Acropolis. Fearing an Ottoman invasion, the Senate of Venice appointed
Tommaso Mocenigo to take over the command of Negroponte and to start negotiations with Antonio. Antonio refused to make peace and forced the defenders of the Acropolis to surrender in January or February 1403.
Timur Lenk had annihilated the army of the Ottoman Sultan
Bayezid I in the Battle of Ankara on 28 July 1403. Bayezid's eldest son,
Süleyman Çelebi, escaped from the battlefield and returned to Adrianople to rule the European territories of the Ottoman Empire. Both Antonio and the Venetians approached him, Antonio seeking the confirmation of his rule in Athens and the Venetians asking Süleyman's military assistance for the recovery of Athens. Süleyman, who needed the support of Venice, Genoa and other maritime powers against Timur Lenk, concluded an alliance with them, also promising to force Antonio to surrender Athens to Venice. However,
Süleyman's war against his brothers prevented him from providing military assistance to Venice. Antonio's kinsman Cardinal
Angelo II Acciaioli persuaded
Pope Innocent VII and King
Ladislaus of Naples to support Antonio's case. Both Antonio and the Cardinal sent envoys to Venice to start negotiations with the representatives of the Senate. They reached a compromise on 31 March 1405. Antonio agreed to compensate Venice for the munitions seized in the Acropolis and to send a silk robe to
St Mark's Basilica every Christmas. He also pledged to prevent Macarius I,
Greek Orthodox Archbishop of Athens, who had supported the Ottomans, from visiting his see and to return the goods of the last Venetian governor of Athens, Nicholas Vitturi, to his heirs. In return, Venice recognized Antonio's right to rule Athens and removed a price from his head. Antonio never sent precious robes to St Mark's and failed to compensate Vitturi's heirs. He even captured a Venetian bridgehead in Attica in 1406, but Venice did not punish him. Antonio, who styled himself as "lord of Athens, Thebes, of all the duchy and its dependencies", was the longest-ruling medieval monarch of Athens. Athens revived during his rule because he preferred it to Thebes (which had been the capital of the duchy for decades). In 1410, he joined the
Ottoman Turks to devastate Venetian
Nauplia. In 1419, a peace between the Turks and Venice called on
Mehmed I to ask Antonio to cease harassing the Venetians. In 1423, he was at war with
Theodore II of Morea and occupied
Corinth. Antonio never forgot his
Florentine roots and he strove to make Athens a capital of culture by restoring monuments, patronising letters, and encouraging chivalry. On 7 August 1422, he conceded privileges to Florentine merchants in Athens. In that year,
Alfonso V of Aragon asserted his claim by appointing Tommaso Beraldo, a
Catalan, duke.
Giovanni Acciaioli, Antonio's uncle and archbishop of Thebes, who was then in
Rome, was sent to Venice to appeal the appointment of Tommaso to the senate there, but the pleas were ignored. Antonio died still in power in January 1435 without legitimate children and his succession to the duchy was disputed between his nephews
Nerio II and
Antonio II and his widow (
Maria Melissene?). ==References==