Zenob Glak was a 4th century Syrian

Syriac Christianity

Syriac or Syrian Christianity , the Syriac-speaking Christians of Mesopotamia, comprises multiple Christian traditions of Eastern Christianity. With a history going back to the 1st Century AD, in modern times it is represented by denominations primarily in the Middle East and in Kerala, India....

 who became the first abbot of the Glak monastery (also known as Surb Karapet Monastery) in the Taron

Taron (historic Armenia)

Taron was a canton of the Turuberan province of Greater Armenia, now in the Muş Province, Turkey. It was divided into four districts: Mamikonian, Palauni, , Artokh Taron was a canton of the Turuberan province of Greater Armenia, now in the Muş Province, Turkey. It was divided into four districts:...

 region of Greater Armenia. He began the chronology that would become the History of Taron of John Mamikonean

John Mamikonean

John Mamikonean is the author of the 7th century History of Taron, a continuation of the account of Zenob Glak. John is not known from any source other than his History, and in the colophon self-identifies as the 35th bishop of Glak after Zenob.-External links:*...

 (10th century, the 35th abbot after Zenob). (ed. Langlois, Venice 1832).

Zenob's History is a somewhat legendary account of Gregory the Illuminator

Gregory the Illuminator

Saint Gregory the Illuminator or Saint Gregory the Enlightener is the patron saint and first official head of the Armenian Apostolic Church...

, and may have been written in Syriac in the 5th, though it was only Armenized in a later century.