sailed
for Genoa, where, with the help of some leading citizens, he expelled
the French once more and re-established the republic under imperial
protection. He reformed the constitution in an aristocratic sense, most
of the nobility being Imperialists, and put an end to the factions which
divided the city. He refused the lordship of Genoa and even the
dogeship, but accepted the position of perpetual censor, and exercised
predominant influence in the councils of the republic until his death.
He was given two palaces, many privileges, and the title of _Liberator
et Pater Patriae_. As imperial admiral he commanded several expeditions
against the Turks, capturing Corona and Patras, and co-operating with
the emperor himself in the capture of Tunis (1535). Charles found him an
invaluable ally in the wars with Francis, and through him extended his
domination over the whole of Italy. Doria's defeat by the Turks at
Preveza in 1538 was said to be not involuntary, and designed to spite
the Venetians whom he detested. He accompanied Charles on the ill-fated
Algerian expedition of 1541, of which he disapproved, and by his ability
just saved the whole force from complete disaster. For the next five
years he continued to serve the emperor in various wars, in which he was
generally successful and always active, although now over seventy years
old; there was hardly an important event in Europe in which he had not
some share. After the peace of Crepy between Francis and Charles in 1544
he hoped to end his days in quiet. But his great wealth and power, as
well as the arrogance of his nephew and heir Giannettino Doria, made him
many enemies, and in 1547 the Fiesco conspiracy to upset the power of
his house took place. Giannettino was murdered, but the conspirators
were defeated, and Andrea showed great vindictiveness in punishing them.
Many of their fiefs he seized for himself, and he was implicated in the
murder of Pier Luigi Farnese, duke of Parma (see FARNESE), who had
helped Fiesco. Other conspiracies followed, of which the most important
was that of Giulio Cibo (1548), but all failed. Although Doria was
ambitious and harsh, he was a good patriot and successfully opposed the
emperor Charles's repeated attempts to have a citadel built in Genoa and
garrisoned by Spaniards; neither blandishments nor threats could win him
over to the scheme. Nor did age lessen his energy, for in 1550, when
eighty-four years old, he again put to sea to punish