Answer: clvi

AnswerCrossword Clue
CLVIXII x XIII
CLVIXXXIX quadrupled
CLVIHalf of CCCXII
CLVIYear in reign of Antoninus Pius.
CLVIOne-fourth of DCXXIV
CLVICato's 156
CLVIRomans' 156
CLVIOvid's 156
CLVIMid second-century date
CLVI156, to Livy