Marcus Terentius Varro
Marcus Terentius Varro and Verrius Flaccus were the main sources on the theology of Jupiter and archaic Roman religion in general. Varro was acquainted with the "libri pontificum" ("books of the Pontiffs") and their archaic classifications. On these two sources depend other ancient authorities, such as Ovid, Servius, Aulus Gellius, Macrobius, patristic texts, Dionysius of Halicarnassus and Plutarch.