Whilst reading the faction preview for the Bactrian kingdom (the History section) I found a small mistake; It reads that Diodotus I himself was ousted and killed by Euthydemus around 230; however it was his son Diodotus II who at that time was king.

Source: Karttunen, Klaus (Helsinki) entry in Brills New Pauly

<http://www.paulyonline.brill.nl/subscriber/entry?entry=bnp_e407200>

Also: Bopearachchi 47-49, 154-161.
(Bopearachchi has won a Mendel prize for his work and is an authority on the subject)

Best regards,
and sorry to defer you from working on the mighty EB2!