Cains Suetonius Tranquillus, a Roman historian, born about A. D. 72, died probably about 140. He was the son of a military tribune, and the younger Pliny helped him to become magister epistolarum. From this position he is said to have been removed by Hadrian about 121 in consequence of an indiscreet familiarity with the empress Sabina, though many historians entirely disbelieve the story, and give other causes for his dismissal. From the list of his works given by Suidas he must have been one of the most voluminous of Roman authors. His chief extant work is the Vitoe XII Coesarum, in eight books, which abounds in details and anecdotes of a questionable character; besides which the treatises De Lllustr'ibus Grammaticis and De Claris Rhetoribus, and some brief biographies of Terence, Horace, Lucan, Juvenal, Persius, and Pliny the Elder, pass under his name. Fifteen editions of Suetonius's works had been published previous to 1500, of which the oldest with a date is that of Rome (fol., 1470). Among the best subsequent editions are those of Burmann (2 vols. 4to, Amsterdam, 1736) and Baumgarten-Crusius (Leipsic, 1816), revised by Hase (2 vols. 8vo, Paris, 1828), and newly edited by Roth (1858). All the fragments attributed to Suetonius have been published, with a critical commentary by Roth (1860). The first English translation was by Philemon Holland (fol., London, 1606), and the latest by Thomson and Forrester (Bohn's "Classical Library," 1855). On the sources from which Suetonius drew his facts, see Cla-son, Tacitus und Sueton (Breslau, 1871).