Tatian was an Assyrian who was a pupil of Justin Martyr in Rome, where, Justin says, the apomnemoneumata (recollections or memoirs) of the Apostles, the gospels, were read every Sunday.
Tatianus adalah seorang Asyur yang menjadi murid Yustinus Martir di Roma, di mana, menurut Yustinus, apomnemoneumata (rekoleksi atau kenangan) para Rasul, kitab-kitab Injil, dibaca setiap hari Minggu.