The Chronograph, Chronography, or Calendar of 354 is a compilation of chronological and calendrical texts produced in 354 AD for a wealthy Roman Christian named Valentinus by the calligrapher and illustrator Furius Dionysius Filocalus.
The most complete and faithful copies of the illustrations are the pen drawings in a 17th-century manuscript from the Barberini collection (Vatican Library, cod.
These drawings, although they are twice removed from the originals, show the variety of sources that the earliest illuminators used as models for manuscript illustration, including metalwork, frescoes, and floor mosaics.
Botticelli adapted a figure of the city of Treberis (Trier) who grasps a bound barbarian by the hair for his painting, traditionally called Pallas and the Centaur.
It also includes the important Liberian Catalogue, a list of Popes, and the Calendar of Filocalus, from which copies of eleven miniatures survive.
All surviving miniatures are full-page, often combined with some text in various ways: Kings of Rome [753–509 BC][2] The Dictators:[2] Rulership of the Caesars [48 BC–AD 324][2]