Rulers of the Roman Empire
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...EMPIRE (table) Rulers of the Roman Empire ( including dates of reign...of Julius Caesar, 27 b.c. a.d. 14 Tiberius, stepson of Augustus, a.d. 14 a.d. 37 Caligula, grandnephew of Tiberius, 37 41 Claudius, uncle of Caligula...