The traditional date assigned by Roman historians to the founding of the city of Rome was 753 B.C., and the Romans reckoned time from that date, designating the year as such-and-such ab urbe condita, or A.U.C.—“from the founding of the city.” Thus A.D. 1 was A.U.C. 754, A.D. 1000 was A.U.C. 1753, A.D. 1492 was A.U.C. 2245, and so forth. All dates used within the text of this book are A.U.C. and should not be confused with dates of the system used in the Christian world.