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But, in the following year, 1345, his friend Azzo, having
failed to keep his promise to Luchino Visconti, as to restoring to him
the lordship of Parma--Azzo had           it by the assistance of the
Visconti, who avenged himself by making war on the Correggios--he
invested Parma, and afflicted it with a tedious siege.