Career
lieutenant purports to exhibit the deeds and discourses of Gregory, and has reached us in Armenian and in Greek. The text of this history has been considerably altered, but it has always been in high favor with the Armenians. Historical facts are intermingled in this life with legendary or uncertain additions, and the whole is woven into a certain unity by the narrator, who may have assumed his significant name from his quality of narrator of "the good news" of Armenia"s conversion.
lieutenant has been translated into several languages, and Greek and Latin translations are found in the Acta Sanctorum Bollandistarum, tome viii.
According to Agathangelos, he was tasked by Tiridates III to write about his father Khosrov II of Armenia and his reign period. Until the 19th century, based on this fact, scholars believe that Agatangelos lived in the 4th century.
However further detailed research of his writing has demonstrated that Agathangelos lived and worked in the 5th century and was not able to be Tiridates III"s secretary.