Joscelin I (died 1131) was a Frankish nobleman of the House of Courtenay who ruled as the lord of Turbessel, prince of Galilee (1112–1119) and count of Edessa (1118–1131).
Gravely injured during the collapse of a sapper mine, Joscelin marched his army to relieve the besieged fortress of Kaysun, and died soon after.
[1] He arrived in the Holy Land during the Crusade of 1101, and entered first into the service of his cousin Count Baldwin II of Edessa (in the army of Godfrey of Bouillon), who invested him with the lordship of Turbessel.
[10] They were rescued by fifty Armenian soldiers hired by Queen Morphia; they disguised themselves as merchants and infiltrated the fortress where the prisoners were kept.
[10] After returning to Edessa Joscelin was able to enlarge the territory of the county, and in 1125 he participated in the Battle of Azaz, a Crusader victory against the atabeg of Mosul, who were led by Aq-Sunqur il-Bursuqi.
[1] In 1122, Joscelin married Maria, daughter of Richard of Salerno and sister of Roger, regent of the Principality of Antioch.