Whilst marching towards the place they saw coming to meet then, with every appearance of the most woful destitution, Peter the Hermit, followed by a small band of pilgrims escaped from the disasters of their expedition, who had passed the winter, as he had, in Bithynia, waiting for more fortunate crusaders.

Peter, affectionately welcomed by the chiefs of the army, recounted to them "in detail," says William of Tyre, "how the people, who had preceded them under his guidance, had shown themselves destitute of intelligence, improvident, and unmanageable at the same time; and so it was far more by their own fault than by the deed of any other that they had succumbed to the weight of their calamities." Peter, having thus relieved his heart and recovered his hopes, joined the powerful army of crusaders who had come at last; and, on the 15th of May, 1097, the siege of Nicaea began.
The town was in the hands of a Turkish sultan, Kilidge-Arslan, whose father, Soliman, twenty years before, had invaded Bithynia and fixed his abode at Nicrea.

He, being informed of the approach of the crusaders, had issued forth, to go and assemble all his forces; but he had left behind his wife, his children, and his treasures, and he had sent messengers to the inhabitants, saying, "Be of good courage, and fear not the barbarous people who make show of besieging our city; to-morrow, before the seventh hour of the day, ye shall be delivered from your enemies." And he did arrive on the 16th of May, says the Armenian historian, Matthias of Edessa, at the head of six hundred thousand horsemen.

The historians of the crusaders are infinitely more moderate as to the number of their foes; they assign to Kilidge-Arslan only fifty or sixty thousand men, and their testimony is far more trustworthy, being that of the victors.

In any case, the Christians and the Turks fought valiantly for two days under the walls of Niccea, and Godfrey de Bouillon did justice to his fame for valor and skill by laying low a Turk "remarkable amongst all," says William of Tyre, "for his size and strength, whose arrows caused much havoc in the ranks of our men." Kilidge-Arslan, being beaten, withdrew to collect fresh troops, and, after six weeks' siege, the crusaders believed themselves on the point of entering Nicaea as masters, when, on the 26th of June, they saw floating on the ramparts the standard of the Emperor Alexis.