Morkinskinna - Chronicler of Sagas

Though it is impossible to tell when exactly the tome was penned, Sharlayan scholars have concluded that the Morkinskinna was most likely compiled during the Sixth Astral Era's fourth of fifth century. In addition to Allagan incantations and glyphs, the volume contained invaluable information n the myriad wars waged by the ancient Elezen Kings ere their arrival in Ishgard. (Encylopedia Eorzea)