Fall of Edessa (1144): Zengi Takes the First Crusader State

The fall of Edessa on 24 December 1144 was the capture of the capital of the County of Edessa, the oldest of the crusader states, by Imad ad-Din Zengi, ruler of Mosul and Aleppo. After a siege of about four weeks his troops broke through a mined section of the walls. The news shocked Western Europe and led directly to the Second Crusade.

Background: the County of Edessa

Edessa, today Şanlıurfa in south-eastern Turkey, was an ancient city with a mainly Armenian and Syriac Christian population. In 1098 Baldwin of Boulogne, a leader of the First Crusade, took control of it, creating the first Latin state in the East even before Antioch and Jerusalem were taken. The county stretched across the Euphrates and was the most exposed of the crusader states, bordering Turkish emirates in Mesopotamia and Anatolia.

By the 1140s the county was ruled by Joscelin II of Courtenay, who had succeeded his father in 1131. Contemporary writers, mostly hostile, described him as an unwarlike ruler who preferred his residence at Turbessel (Tell Bashir), west of the Euphrates, to Edessa itself. Relations with the neighbouring Principality of Antioch were poor, which weakened any common defence.

Zengi, a Turkish officer appointed atabeg of Mosul in 1127 and lord of Aleppo from 1128, was building a powerful state in northern Syria and Iraq. His main ambitions were to dominate Damascus and the Muslim rulers of Mesopotamia, but he watched for any opportunity against the Franks.

The siege

In autumn 1144 Joscelin left Edessa with much of his army, marching west of the Euphrates in support of his ally Kara Arslan, the Artuqid emir of Hisn Kayfa. Zengi, then campaigning nearby, moved quickly and laid siege to Edessa on 28 November 1144. The city had strong walls but few trained soldiers.

The defence was organised by the city’s church leaders: the Latin archbishop Hugh II, the Armenian bishop John and the Syriac Orthodox (Jacobite) bishop Basil bar Shumana, whose experiences are reflected in Syriac chronicles. Zengi’s engineers dug mines under the northern walls, propping the tunnels with timber and then setting it alight. Joscelin did not attempt to relieve the city, and appeals to Antioch and Jerusalem came too late.

On 24 December 1144 a section of the wall collapsed and Zengi’s troops poured into the city. Many inhabitants died in the fighting and in a crush as people fled towards the citadel; Archbishop Hugh was among those killed. The citadel surrendered on 26 December.

Aftermath

Contemporary sources report that Zengi stopped the killing once the city was secured and spared the native Christians, while the Frankish men were put to death and their property seized. He repopulated the city and tried to restore its economic life. Across the Muslim world he was celebrated as a champion of jihad, and the Abbasid caliph sent him honorific titles.

Zengi did not live long to enjoy his triumph. He was murdered by a slave in his camp at Qal’at Ja’bar on 14 September 1146. In the confusion Joscelin and the Armenians of Edessa retook the lower city in October 1146, but Zengi’s son Nur ad-Din arrived within days. The Franks were driven out, many residents were killed or enslaved, and the city never recovered its former importance.

Joscelin was captured in 1150 and died in prison in Aleppo in 1159. His wife Beatrice sold the county’s remaining castles to the Byzantine emperor Manuel I Komnenos, who soon lost them to Muslim rulers.

Reaction in Europe

News of Edessa reached the West in 1145, carried by envoys including Bishop Hugh of Jabala, who met Pope Eugenius III at Viterbo. On 1 December 1145 Eugenius issued the bull Quantum praedecessores, calling on King Louis VII of France and his nobles to take the cross. Bernard of Clairvaux’s preaching from 1146 turned the appeal into the Second Crusade, which failed to recover Edessa and ended in defeat before Damascus in 1148.

Timeline

• 1098: Baldwin of Boulogne takes control of Edessa, founding the first crusader state.
• 1131: Joscelin II becomes count of Edessa.
• 1144, autumn: Joscelin leaves the city with much of his army.
• 1144, 28 November: Zengi begins the siege.
• 1144, 24 December: The walls are breached and the city is taken.
• 1144, 26 December: The citadel surrenders.
• 1145, 1 December: Pope Eugenius III issues Quantum praedecessores.
• 1146, 14 September: Zengi is murdered at Qal’at Ja’bar.
• 1146, October–November: Joscelin briefly retakes Edessa but is expelled by Nur ad-Din.
• 1150: Joscelin is captured; the remaining lands are sold to Byzantium.

Why it matters

The fall of Edessa was the first great reversal for the crusader states and showed that their survival depended on Muslim disunity. It made Zengi’s dynasty the leading force in the Muslim response to the crusades, a role continued by Nur ad-Din and Saladin. In Europe it triggered the Second Crusade, whose failure deepened doubts about the crusading enterprise.