The very atrocity of the Vespers proved the salvation of Sicily, by cutting off all possibility of compromise. On that same bloodstained night of the 31st of March, the people of Palermo assembled in parliament, and, divided between the triumph of vengeance and terror at their own daring act, advanced still more decidedly in the path they had chosen. They abolished monarchy, and resolved to establish a commonwealth under the protection of the Church of Rome. They were moved to this determination by deadly hatred against Charles and his government, and the recollection of the stern rule of the Swabian dynasty on the one hand, and, on the other, by grateful remembrance of the liberty enjoyed in 1254; by the example of the Tuscan and Lombard republics, and by the natural pride of a powerful city, which having freed itself from a detested yoke confided in its own strength. The name of the Church was added in order to disarm the wrath of the Pope, to tempt his ambition, or to justify the rebellion under the pretext that in driving out their more immediate but criminal ruler they contemplated no infraction of loyalty to the suzerain from whom he held his power. Roger Mastrangelo, Henry Barresi, and Niccoloso of Ortoleva (knights), and Niccolo of Ebdemonia were proclaimed captains of the people with five counsellors. By the glare of torchlight on the bloody ground, amid the noise and throng of the armed multitude, and with all the sublime pomp of tumult, the republican magistrates were inaugurated. Trumpets and Moorish kettle-drums sounded, and thousands upon thousands of voices uttered the joyous cry of “The Republic and Liberty!” The ancient banner of the city—a golden eagle in a red field—was unfolded to wave amid new glories; and in homage to the Church the keys of St. Peter were quartered upon it.
At midnight, John of St. Remigio stayed his rapid flight at Vicari, a castle thirty miles distant from the capital; where, knocking loudly and hurriedly, he was with difficulty recognized by the garrison, half-drunk from the celebration of the same festival which had bred so fearful a slaughter in Palermo. Having admitted him, they were transfixed with amazement at seeing their Justiciary at so unreasonable an hour, unescorted, breathless, and covered with blood.