Circa 1100-1101, an anonymous writer connected with Bohemund of Antioch wrote the Gesta francorum et aliorum Hierosolymytanorum (The Deeds of the Franks) This text was used by the later writers as a source.

The March to Jerusalem

Accordingly, we left the fortified town and came to Tripoli on the sixth day of the week on the thirteenth day of incoming May, and we stayed there for three days. At length, the King of Tripoli made an agreement with the leaders, and he straightway loosed to them more than three hundred pilgrims who had been captured there and gave fifteen thousand besants and fifteen horses of great value; he likewise gave us a great market of horses, asses and all goods, whence the whole army of Christ was greatly enriched. But he made an agreement with them that if they could win the war which the Emir of Babylon was getting ready against them and could take Jerusalem, he would become a Christian and would recognize his land as (a gift) from them. In such manner it was settled.

We left the city on the second day of the week in the month of May and, passing along a narrow and difficult road all day and night, we came to a fortress, the name of which was Botroun. Then we came to a city called Gibilet near the sea, in which we suffered very great thirst, and, thus worn out, we reached a river named Ibrahim. Then on the eve of the day of the Ascension of the Lord we crossed a mountain in which the way was exceedingly narrow, and there we expected to find the enemy lying in ambush for us. But God favoring us, none of them dared to appear in our way. Then our knights went ahead of us and cleared the way before us, and we arrived at a city by the sea which called Beirut, and thence we went to another city called Sidon, thence to another called Tyre, and from Tyre to the city of Acre. But from Acre we came to a fortified place the name of which was Cayphas, and then we came near Caesarea.

There was celebrated Pentecost on the third day of outgoing May. Then we came to Ramlah, which through fear of the Franks the Saracens had left empty. Near it was the famous church in which rested the most precious body of St. George, since for the name of Christ he there happily received martyrdom from the treacherous pagans. There our leaders held a council to choose a bishop who should have charge of this place and erect a church. They gave tithes to him and enriched him with gold and silver, and with horses and other animals, that be might live the more devoutly and honorably with those who were with him. He remained there with joy.

The Fall of Jerusalem

At length, our leaders decided to beleaguer the city with siege machines, so that we might enter and worship the Saviour at the Holy Sepulchre. They constructed wooden towers and many other siege machines. Duke Godfrey made a wooden tower and other siege devices, and Count Raymond did the same, although it was necessary to bring wood from a considerable distance. However, when the Saracens saw our men engaged in this work, they greatly strengthened the fortifications of the city and increased the height of the turrets at night. On a certain Sabbath night, the leaders, after having decided which parts of the wall were weakest, dragged the tower and the machines to the eastern side of the city. Moreover, we set up the tower at earliest dawn and equipped and covered it on the first, second, and third days of the week. The Count of St. Gilles erected his tower on the plain to the south of the city.

While all this was going on, our water supply was so limited that no one could buy enough water for one denarius to satisfy or quench his thirst. Both day and night, on the fourth and fifth days of the week, we made a determined attack on the city from all sides. However, before we made this assault on the city, the bishops and priests persuaded all, by exhorting and preaching, to honor the Lord by marching around Jerusalem in a great procession, and to prepare for battle by prayer, fasting, and almsgiving. Early on the sixth day of the week we again attacked the city on all sides, but as the assault was unsuccessful, we were all astounded and fearful. However, when the hour approached on which our Lord Jesus Christ deigned to suffer on the Cross for us, our knights began to fight bravely in one of the towers - namely, the party with Duke Godfrey and his brother, Count Eustace. One of our knights, named Lethold, clambered up the wall of the city, and no sooner had he ascended than the defenders fled from the walls and through the city. Our men followed, killing and slaying even to the Temple of Solomon, where the slaughter was so great that our men waded in blood up to their ankles....

Count Raymond brought his army and his tower up near the wall from the south, but between the tower and the wall there was a very deep ditch. Then our men took counsel how they might fill it, and had it proclaimed by heralds that anyone who carried three stones to the ditch would receive one denarius. The work of filling it required three days and three nights, and when at length the ditch was filled, they moved the tower up to the wall, but the men defending this portion of the wall fought desperately with stones and fire. When the Count heard that the Franks were already in the city, he said to his men, "Why do you loiter? Lo, the Franks are even now within the city."

The Emir who commanded the Tower of St. David surrendered to the Count and opened that gate at which the pilgrims had always been accustomed to pay tribute. But this time the pilgrims entered the city, pursuing and killing the Saracens up to the Temple of Solomon, where the enemy gathered in force. The battle raged throughout the day, so that the Temple was covered with their blood. When the pagans had been overcome, our men seized great numbers, both men and women, either killing them or keeping them captive, as they wished. On the roof of the Temple a great number of pagans of both sexes had assembled, and these were taken under the protection of Tancred and Gaston of Beert. Afterward, the army scattered throughout the city and took possession of the gold and silver, the horses and mules, and the houses filled with goods of all kinds.

Rejoicing and weeping for joy, our people came to the Sepulchre of Jesus our Saviour to worship and pay their debt [i.e. fulfill crusading vows by worshiping at the Sepulchre]. At dawn our men cautiously went up to the roof of the Temple and attacked Saracen men and women, beheading them with naked swords. Some of the Saracens, however, leaped from the Temple roof. Tancred, seeing this, was greatly angered.