he had left to guard his own principality, to inform him, that the Florentines had entered the Val di Nievole, burning and spoiling every thing before them; and from Vanni Mordecastelli, his civil lieutenant at Lucca, with information of a plot for the destruction of his power which was brewing in that city. Castruccio immediately left the Lombard army, and returned with his troops to disconcert these designs.
Of the castles which were situated within a circuit of many miles round Lucca, all were subject to Castruccio, except the castle of Valperga and its dependencies. He had often solicited Euthanasia to place her lordship under the protection of his government; and she had uniformly refused. The castle of Valperga was situated on a rock, among the mountains that bound the pass through which the Serchio flows, and commanded the northern entrance to the Lucchese territory. It was a place of great strength, and in the hands of an enemy might afford an easy entrance for an hostile army into the plain of Lucca itself. The Florentines, trusting to the affection which
