Agathangelos (Agat’angełos) is the name given in Armenian tradition to the unknown editor of the story of the conversion of Armenia by Gregory the Illuminator in the early 4th century CE. Some aspects of the story are mentioned in the Buzandaran, a compilation of “Epic Tales” dating to the 460s CE (Thomson, 2010, 27–30). But not until late that century do a title and author’s name appear: Ł. P’arpec’i states that “Agathangelos” composed the first written history of Armenia, which was called “T…