Rufinianus Bassus, Virius Lupus Iunius Gallienus, L. Aelius Helvius Dionysius, T. Flavius Postumius Titianus, L. Crepereius Rogatus, M. Iunius Priscillianus Maximus, Iunius Postumianus, Iulius Aurelianus, Gaius Ceionius Rufius Volusianus, Memmius Vitrasius Orfitus (father-in-law of Symmachus), Vettius Agorius Praetextatus (one of the leading figures in the pagan Renaissance of the late 4th century), Gaius Vettius Cossinius Rufinus, and Q. Clodius Flavianus. All are listed s.v. in Rupke’s Fasti Sacerdotum with references to the primary sources. Only Iunius Gallienus adds the epithet invictus to Sol
^ Hijmans 1996, Matern 2001, Wallraff 2002, Berrens 2004, (Hijmans 2009)
^ The best English summary of this issue is (Hijmans 2009, pp. 585-592), with ample references to earlier literature (primarily in German).
^ The full text of the calendar is available here
^ See three different sections of the hymn: near the beginning, in c. 3 he exhorts his reader to celebrate the annual festival of Sol as it is celebrated in the ruling city; in c. 41, he draws a contrast between the quadrennial games for Sol (tet?aet??????? ????a?) which he characterizes as relatively new, and this annual festival – the two are clearly not the same; in c. 42-3, lastly, he states that this annual festival in honour of the rebirth of the sun takes place immediately after the Saturnalia (which ended on December 23).
^ Besides (Hijmans 2009), see (M. R. Salzman, “New Evidence for the Dating of the Calendar at Santa Maria Maggiore in Rome” Transactions of the American Philological Association 111 (1981, pp. 215-227) p. 221.
^ A comprehensive discussion of all sol-coinage and -legends per emperor from Septimius Severus to Constantine can be found