In Constantinople about 380 CE Roman Christian priest, confessor, theologian and historian Jerome (Eusebius Sophronius Hieronymus) composed The Chronicon or Temporum liber, The Book of Times. This was a translation into Latin of the chronological tables which compose the second part of the Chronicon of Eusebius, with a supplement covering the period from 325 to 379.
This entry I originally wrote in 2012. On June 25, 2021 I learned from Roger Pearse's blog (Roger-Pearse.com) that a mid-5th century copy of Jerome's Chronicon, written in Late Antiquity during the last days of the Imperium Romanum, within one hundred years of Jerome's death, is preserved as Bodleian Library MS. Auct.T-2.26 and is fully digitized and available online through the Digital Bodleian. This must certainly be one of the very earliest surviving copies of this text. Pearse wrote, "I can say, from my own memory, just how amazing this is. When I remember, less than twenty years ago, that access to this volume was basically impossible. Nobody ever saw it. But now… anybody can consult it, anywhere in the world."
The codex contains the text of Jerome's work followed by the Chronicle of Marcellinus. The Digital Bodleian describes the codex as follows: