Answer: xvi

AnswerCrossword Clue
XVISixteen.
XVIThe most recent Pope Benedict
XVIAmendment that authorized income taxes
XVISweet age in old Roma
XVISweet age in old Roma?
XVISweet age for Caesar?
XVIBenedict ... (pope beginning in 2005)
XVI"Sweet" age in ancient Rome?
XVILast Pope Gregory
XVILouis who was guillotined
XVIAge at which to get a chariot license?
XVICato's sweet age?
XVITwice VIII
XVIA sweet age for Calpurnia
XVISweet age, to Sulla
XVIYear in reign of Tiberius
XVIA sweet age in Rome
XVILouis ..., King of France, 1774-93.
XVILouis who married Marie Antoinette
XVILouis .., eponym of the Kentucky city
XVI1982 Super Bowl number
XVI"Sweet" Roman numeral?
XVICaesar's 16
XVIIV x IV
XVINumber of Louis in the French Revolution
XVI16 in old Rome
XVISquare in old Rome?
XVIBenedict who resigned as pontiff
XVIII to the IVth power
XVISweet age for a Roman?
XVIIV squared