Possible Clues:

• Half of AD
• Civilization-building video game series set in various years
• Herod's year
• At such a time, girl has nothing to do for a little
• Year in Trajan's reign
• and 9 across, Now there might be a capital ad for this, in short
• In the year: Lat.
• In the year, in Caesar's time
• Year in dates
• ...Domini, AD