KING VOLOGASES OF PARTHIA SENDS HIS SON HEYDAR ON DIPLOMATIC MISSION TO ROME
- During Heydar's time in Rome, Vologases dies and Heydar is crowned King.
Essentially most characters would only need to know things between 50CE through to the current time.
AeRo is mostly AU after Caligula. However, the births of a few important dates were put in place to assist in working out ages, etc.