Also known as
* James of Nisibis
* Jacob of Nusaybin
* 15 July
Monk. First bishop of Nisibis, Mesopotamia (modern Nusaybin, Turkey) from 309 until his death. Spiritual director of Saint Ephrem of Syria. Participated in the Council of Nicaea in 325. Noted for praying for the death of Arius, founder of the Arian heresy. Known for his learning, his piety, his construction of a basilica and theological school at Nisibis. Launched the first known search by Christians for the mountain of Noah’s Ark. Many writings have been attributed to him; scholars have recently determined they were authored by another Jacob.
* c.338 at Nisibis, Mesopotamia (modern Nusaybin, Turkey) of natural causes
* relics at Edessa, Mesopotamia (modern Sanliurfa, Turkey)