The failed attempt of the
Bandiera Brothers, Venetians who had served in the
Austrian navy, against the
Neapolitan Bourbons in 1844, ignited the Venetian patriotism. In 1847, Manin presented a petition to the Venetian congregation, a consultative assembly tolerated by Austria, informing the emperor of the wants of the nation. He was arrested on a charge of high treason on 18 January 1848, although his arrest only served to agitate the Venetians. Two months later, the people of Venice forced
Count Pallfy, the Austrian governor, to release Manin (17 March). The Austrians soon lost control of the city: the
Venetian Arsenal was seized by revolutionaries, and, under the direction of Manin, a civic guard and a provisional government were instituted. The Austrians withdrew from Venice on 26 March, and Manin became president of the
Republic of San Marco. He was in favour of Italian unity and was not anxious about annexation to
Piedmont because he would have liked to enlist French aid. He then resigned his powers to the Piedmontese commissioners on 7 August. But after the Piedmontese defeat at
Custoza, and the armistice in which
King Charles Albert abandoned
Lombardy and Venetia to Austria, the Venetians attempted to
lynch the royal commissioners, whose lives Manin saved. An assembly was summoned, and a
triumvirate formed with Manin at its head. Towards the end of 1848, the Austrians reoccupied all of the Venetian mainland. Early in 1849, Manin was again chosen president of the Republic, and conducted the defence of the city, with the citizens fighting back the reoccupation. After the defeat of
Charles Albert's troops at
Novara in March, the Venetian assembly voted to grant Manin powers. Meanwhile, the Austrian forces closed around the city. Manin was seconded by the Neapolitan general,
Guglielmo Pepe, who led the Neapolitan army to defend Venice against his king's order. On 26 May, the Venetians were forced to abandon Fort
Marghera; food was becoming scarce; on 19 June, the
powder magazine blew up; and in July,
cholera broke out. The Austrian batteries, subsequently, began to bombard Venice, and when the Sardinian fleet withdrew from the
Adriatic, the city was also attacked by sea. On 24 August 1849, Manin succeeded in negotiating amnesty to save himself, Pepe and some others who were to go into exile. On 27 August, Manin left Venice on board a French ship. ==Exile and last years==