It was during the Second Crusade in 1144.
The Muslims captured Edessa and defeated the crusaders at Damascus in the year 1144.
In 1097, Nicaea was captured and given to the Byzantine Empire. The Jewish and Muslims lost Jerusalem in July 1099, many of whom were massacred, and the Kingdom of Jerusalem was formed. Along with that capture, the following crusader states were founded: the County of Tripoli, the Principality of Antioch, the County of Edessa.
Theophilus of Edessa was born in 695.
Theophilus of Edessa died in 785.
Jacob of Edessa died in 708.
County of Edessa was created in 1098.
Matthew of Edessa was born in 10##.
Matthew of Edessa died in 1144.
Thaddeus of Edessa was born in 0##.
Thaddeus of Edessa died in 1##.
Battle of Edessa happened in 259.
Abibus of Edessa died in 322.