Answer: dlix

AnswerCrossword Clue
DLIXXIII times XLIII
DLIXXLIII times XIII
DLIX559, at the Forum
DLIX559, on some monuments
DLIX559, to Fabius
DLIXYear in the reign of Clotaire I
DLIXHalf of MCXVIII
DLIXYear in Pelagius I's papacy
DLIXMid sixth-century year
DLIX1,000 years before the coronation of Queen Elizabeth I
DLIXCato's 559
DLIXCCXLII + CCCXVII
DLIXMCXVIII halved