Located in the Syrian steppes, Aleppo was an important center of the Muslim world in the 11th century. When travelling from Baghdad to Antioch in the 1060s,
Ibn Butlan crossed prosperous villages near Aleppo. Earthquakes regularly hit northern Syria in the 11th century. Two earthquakes were especially serious, causing much damage in August and November 1114. A
Seljuk prince,
Ridwan, ruled Aleppo when the crusaders reached northern Syria in 1097. His conflicts with his brother,
Duqaq, the ruler of Damascus, enabled the crusaders to lay
siege to Antioch. Ridwan and Duqaq led separate relieving armies to the town, but the crusaders defeated both. The first crusader ruler of Jerusalem
Godfrey of Bouillon was planning the conquest of Aleppo already in 1100, according to
Guibert of Nogent. Taking advantage of the crusaders' defeat in the
Battle of Harran in 7 May 1104, Ridwan invaded the
Principality of Antioch, but its ruler,
Tancred, routed him in the
Battle of Artah in the spring of 1105. Ridwan did not dare to make raids against Antiochene territories during the following 5 years. Ridwan was a friend of the
Assassins. He died in December 1113. Afterward,
Ibn al-Khashshab became the
de facto ruler of Aleppo. Rumours about the plans of Tancred's successor,
Roger of Salerno, to conquer Aleppo brought about an alliance between the
Artuqid emir of
Mardin,
Ilghazi, and the
atabeg (or governor) of Damascus,
Toghtekin, in the early summer of 1119. Ilghazi inflicted a crushing defeat on the crusaders in the
Battle of the "Field of Blood" on 28 June. Roger perished fighting in the battlefield.
Baldwin II, King of Jerusalem, and
Pons, Count of Tripoli, hurried to Antioch to save the principality. Ilghazi and Toghtekin joined their forces, but they could not defeat the crusaders in a
battle near
Tell Danith and returned to their realms in August. In 1122,
Joscelin I of Edessa was captured by
Belek Ghazi. The next year, he was joined in captivity by Baldwin II, who was later imprisoned in the
Citadel of Aleppo. Baldwin II who was held captive by
Timurtash, son of Ilghazi, was released 29 August 1124, based on an agreement to pay 80,000 dinars and to cede
Atarib,
Zardana,
Azaz and other Antiochene fortresses to Timurtash. == Siege ==