10. Q. FABIUS (Q. F. Q. N.) AMBUSTUS, dictator in B. C. 321, but immediately resigned through some fault in the election. (Liv. 9.7.)
William Smith. A Dictionary of Greek and Roman biography and mythology. London. John Murray: printed by Spottiswoode and Co., New-Street Square and Parliament Street. In the article on Soranus, we find: "at this present time (1848)" and this date seems to reflect the dates of works cited. 1873 - probably the printing date.