County of Edessa

The County of Edessa was a Crusader state founded in northern Mesopotamia in 1098. Zengi conquered its capital, Edessa, in 1144, ending the county.

Edessa: A historic city in Upper Mesopotamia, now Şanlıurfa in southeastern Turkey. The county took its name from this capital, whose fall in 1144 ended the state.
First Crusade: A military expedition launched by western European Christians in 1096 that captured Jerusalem in 1099. Its advance into northern Mesopotamia created the circumstances for Edessa's foundation.
Fall of Edessa (1144): Zengi's capture of the city of Edessa in December 1144, which ended Latin rule there. The city's fall was the decisive event that brought the county to an end.
Upper Mesopotamia: The northern part of Mesopotamia, between the upper Tigris and Euphrates river regions. The county occupied this frontier zone between Anatolia, Syria, and Iraq.
Baldwin I of Jerusalem: A Frankish noble who became the first Latin ruler of Edessa and later the first king of Jerusalem. His seizure of power in 1098 established the county's ruling dynasty.
Siege of Edessa (1098): The takeover of Edessa by Baldwin of Boulogne and his followers in February 1098. This seizure established Latin rule in the city and gave rise to the county.
Second Crusade: A crusade launched in 1147 in response to the fall of Edessa. The county's collapse supplied the immediate cause for this major western expedition.
Syriac Christianity: A family of Eastern Christian traditions rooted in Syriac language and liturgy. Syriac Christian communities formed part of the county's diverse local population.
Joscelin II of Edessa: The last count of Edessa, ruling when Zengi captured the city in 1144. His absence from the capital during Zengi's siege helped leave Edessa vulnerable.
Baldwin of Boulogne: A leader of the First Crusade who became count of Edessa and later King Baldwin I of Jerusalem. His departure from the main crusading army to Edessa founded the county.

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