Fourth Crusade - Diversion To Constantinople

Diversion To Constantinople

Boniface of Montferrat, meanwhile, had left the fleet before it sailed from Venice, to visit his cousin Philip of Swabia. The reasons for his visit are a matter of debate; he may have realized the Venetians' plans and left to avoid excommunication, or he may have wanted to meet with the Byzantine prince Alexios IV Angelos, Philip's brother-in-law and the son of the recently deposed Byzantine emperor Isaac II Angelos. Alexios IV had recently fled to Philip in 1201 but it is unknown whether or not Boniface knew he was at Philip's court. There, Alexios IV offered to pay the entire debt owed to the Venetians, give 200,000 silver marks to the Crusaders, 10,000 Byzantine professional troops for the Crusade, the maintenance of 500 knights in the Holy Land, the service of the Byzantine navy to transport the Crusader Army to Egypt and the placement of the Eastern Orthodox Church under the authority of the Pope if they would sail to Byzantium and topple the reigning emperor Alexios III Angelos, brother of Isaac II. It was a tempting offer for an enterprise that was short on funds. Doge Dandolo was a fierce supporter of the plan, however in his earlier capacity as an ambassador to Byzantium and someone who knew the finer details of how Byzantine politics worked, it is likely he knew the promises were false and there was no hope of any Byzantine emperor raising the money promised, let alone raising the troops and giving the church to the Holy See. Count Boniface agreed and Alexios IV returned with the Marquess to rejoin the fleet at Corfu after it had sailed from Zara. Most of the rest of the Crusade's leaders, encouraged by bribes from Dandolo, eventually accepted the plan as well. However, there were dissenters; led by Reynold of Montmirail, those who refused to take part in the scheme to attack Christendom's greatest city sailed on to Syria. The remaining fleet of 60 war galleys, 100 horse transports, and 50 large transports (the entire fleet was manned by 10,000 Venetian oarsmen and marines) sailed in late April 1203. In addition, 300 siege engines were brought along on board the fleet. Hearing of their decision, the Pope hedged and issued an order against any more attacks on Christians unless they were actively hindering the Crusader cause, but failed to condemn the scheme outright.

When the Fourth Crusade arrived at Constantinople, the city had a population of 400,000 people, a garrison of 15,000 men (including 5,000 Varangians), and a fleet of 20 galleys. The main objective of the Crusaders was to place Alexios IV on the Byzantine throne so that they could receive the rich payments he had promised them. Conon of Bethune delivered this ultimatum to the Lombard envoy sent by the Emperor Alexios III Angelos, who was the pretender's uncle and had seized the throne from the pretender's father Isaac II. The citizens of Constantinople were not concerned with the cause of the deposed emperor and his exiled son; hereditary right of succession had never been adopted by the empire and a palace coup between brothers wasn't considered illegitimate in the way it would have been in the West. First the crusaders attacked and were repulsed from the cities of Chalcedon and Chrysopolis, suburbs of the great city. They won a cavalry skirmish in which they were outnumbered, defeating 500 Byzantines with just 80 Frankish knights.