
Originally Posted by
Prince Regent George
About the Iceni, we just don't know, since there are neither archeological evidence nor written sources, which could verify or deny their existence, in he begining of the game.
However, the Parthian inclusion is absolutely historically accurate, since they implemented it as a tribal federation in modern Turkmenistan and not as an empire, as you suggest.
More specifically, the Parni were a coalition of Dahae tribes, which invaded Margiana and, after being repelled, crushed a greek, rebel satrap of Parthia (his name is probably Andragoras) and therefore they installed in his territory. So the greeks and roman sources call them Parthians, despite being originated from northern places.
The time of their migration is rather doubtful, since the ancient sources contradict each other, but it's irrelevant to our discussion, since, according to the maps' reveals, CA located the not in Parthia, but in the norther regions of todays Turkmenistan, bedore they migrated (which is also historically correct).