But in 1203, a new and unexpected danger arose to scare him from his feasting. His blind brother Isaac had a young son named Alexius, who escaped from Constantinople to Italy, and took refuge with Philip of Suabia, the new Emperor of the West. Philip had married a daughter of Isaac Angelus, and determined to do something to help his young brother-in-law. The opportunity was not hard to seek. Just at this moment a large body of French, Flemish, and Italian Crusaders, who had taken arms at the command of the Pope, were lying idle at Venice. They had marched down to the great Italian seaport with the intention of directing a blow against Malek-Adel, Sultan of Egypt. The Venetians had contracted to supply them with vessels for the Crusade, but for reasons of their own had determined that the attack should not fall on the shore for which it had been destined. They were on very good terms with the Egyptian sovereign, who had granted them valuable commercial privileges at Alexandria, which threw the whole trade with the distant realms of India into Venetian hands. Accordingly they had determined to avert the blow from Egypt and turn it against some other enemy of Christendom. The leaders of the Fourth Crusade proved unable to pay the full sum which they had contracted to give the Venetians as ship-hire, and this was made an excuse for keeping [pg 280] them camped on the unhealthy islands in the Lagoons till their patience and their stores were alike exhausted. Henry Dandolo, the aged but wily doge, then proposed to the Crusaders that they should pay their way by doing something in aid of Venice. The Dalmatian town of Zara had lately revolted and done homage to the King of Hungary; if the Crusaders would recover it, the Venetian state would wipe out their debts and transport them whither they wished to go.
The Crusaders had taken arms for a holy war against the Moslems. They were now invited to turn aside against a Christian town and interest themselves in Venetian politics. Conscientious men would have refused to join in such an unholy bargain, and would have insisted in carrying out their original purpose against Egypt. But conscientious men had been growing more and more rare among the Crusaders for the last hundred years. There were as many greedy military adventurers among them as single-hearted pilgrims. The more scrupulous chiefs were over-persuaded by their designing companions, and the expedition against Zara was undertaken.
Zara fell, but another and a more important enterprise was then placed before the Crusaders. While they wintered on the Dalmatian coast the young Alexius Angelus appeared in their camp, escorted by the ambassadors of his brother-in-law, the Emperor Philip of Suabia. The exiled prince besought them to turn aside once more before they sailed to the East, and to rescue his blind father from the dungeon into which he had been cast by his cruel brother Alexius III. If they would drive out the [pg 281] usurper and restore the rightful ruler to his throne, they should have anything that the Byzantine Empire could afford to help them for their Crusade—money in plenty, stores, a war fleet, a force of mercenary troops, and his own presence as a helper in the war with Egypt.
Pope Innocent III. had already been storming at the adventurers for shedding Christian blood at Zara, and tampering with their Crusader's oath. But the prospect of Byzantine gold seduced the needy Western barons, and the desire of keeping the war away from Egypt ruled the minds of the Venetians. They hesitated and began to treat with Alexius, though they knew that thereby they were calling down on themselves the terrors of a Papal excommunication. All now depended on the leaders, and among them the abler minds were set on the acceptance of the proposal of the young Byzantine exile. The three chiefs of the Crusade were the Doge Henry Dandolo, Boniface Marquis of Montferrat, and Baldwin Count of Flanders. In Dandolo the ruthless energy of the Italian Republics stood incarnate; he was the one man in the crusading army who knew exactly what he wanted. Old and blind, but clear-headed and inflexible, he was set on revenging an ancient grudge against the Greeks, and on furthering, by any means, good or evil, the fortunes of his native city. Baldwin and Boniface, the two secondary figures in the camp of the Franks, are perfect representations of the two types of crusader. The Fleming, gallant and generous, pious and debonnair, worthy of a more righteous enterprise and a more honourable death, was a true [pg 282] successor of Godfrey of Bouillon, and the heroes of the First Crusade. The Lombard, a deep and hardy schemer, to whom force and fraud seemed equally good, was simply seeking for wealth and fame in the realms of the East. He cared little for the Holy Sepulchre, and much for his own private advancement. Behind these three leaders we descry the motley crowd of the feudal world; relic-hunting abbots in coats of mail, wrangling barons and penniless knights, the half-piratical seamen of Venice, and the brutal soldiery of the West.
View Of Constantinople. (From The Side Of The Harbour.)
Boniface of Montferrat and Doge Dandolo gradually talked over the more scrupulous Baldwin and his friends, and the crusading fleet was launched against Constantinople, after a treaty had been signed which bound Alexius Angelus and his blind father, Isaac II., to pay the Crusaders 200,000 marks of silver, send ten thousand men to Palestine, and acknowledge the supremacy of the Pope over the Eastern Church. In these conditions lay the germs of much future trouble.
The Crusading armament reached the Dardanelles without having to strike a blow. The slothful and luxurious emperor let things slide, and had not even a fleet ready to send against them in the Aegean. He shut himself up in Constantinople, and trusted to the strength of its walls to deliver him, as Heraclius and Leo III. and many more of his predecessors had been delivered. If the siege had been conducted from the land side only, his hopes might have been justified, for the Danes and English of the Varangian Guard beat back the assault of the Franks on the land-wall. But Alexius III., unlike earlier emperors, was attacked by [pg 284] a fleet to which he could oppose no adequate naval resistance. Though the Crusaders were driven off on shore, the Venetians stormed the sea-wall, by the expedient of building light towers on the decks, and throwing flying bridges from the towers on to the top of the Byzantine ramparts. The blind Doge pushed his galley close under the wall, and urged on his men again and again till they had won a lodgment in some towers on the port side of the sea-wall. The Venetians then fired the city, and a fearful conflagration followed.
Hearing that the enemy was within the ramparts, the cowardly Alexius III. mounted his horse and fled away into the inland of Thrace, leaving his troops, who were not yet half beaten, without a leader or a cause to fight for. The garrison bowed to necessity, and the chief officers of the army drew the aged Isaac II. out of his cloister prison and proclaimed his restoration to the throne. They sent to the Crusading camp to announce that hostilities had ceased, and to beg Prince Alexius to enter the city and join his father in the palace.
The end of the expedition of the Crusaders had now been attained, but it may safely be asserted that the chief feeling in their ranks was a bitter disappointment at being cheated out of the sack of Constantinople, a prospect over which they had been gloating ever since they left Zara. They spent the next three months in endeavouring to wring out of their triumphant protégés, Isaac and Alexius, every bezant that could be scraped together. The old emperor, already blind and gout-ridden, was driven to imbecility [pg 285] by their demands: his son was a raw, inexperienced youth who could neither be firm, nor frank, nor dignified in dealing with any one. He angered the Franks by insincere diplomacy, and the Greeks by his reckless schemes for extracting money from them. The winter of 1203-4 was spent in ceaseless wrangling about the subsidy due to the Crusaders, till Alexius, growing seriously frightened, began exactions on his subjects which drove them to revolt. When he seized and melted down the golden lamps and silver candelabra which formed the pride of St. Sophia, stripped its eikonostasis of its rich metal plating, and requisitioned the jewelled eikons and reliquaries of every church in the city, the populace would stand his proceedings no longer. They would not serve an emperor who had sold himself to the Franks, and only reigned in order to subject the Eastern Church to Rome, and to pour the hoarded wealth of the ancient empire into the coffers of the upstart Italian republics.