Diodotus II Theos was the son and successor of Diodotus I Soter, who rebelled against the Seleucid Empire, establishing the Graeco-Bactrian Kingdom. Diodotus II probably ruled alongside his father as
Diodotus II depicted on one of his coins
Gold stater of Diodotus I, with Greek legend ΒΑΣΙΛΕΩΣ ΑΝΤΙΟΧΟΥ – "Of King Antiochus"
Silver tetradrachm of Diodotus II. Obverse: Diademed head of Diodotos I to right. Reverse: ΒΑΣΙΛΕΩΣ - ΔΙΟΔΟΤΟΥ, Zeus advancing left.
Gold stater of Diodotus II, with Greek legend ΒΑΣΙΛΕΩΣ ΔΙΟΔΟΤΟΥ – "of King Diodotus"
Euthydemus I was a Greco-Bactrian king and founder of the Euthydemid dynasty. He is thought to have originally been a satrap of Sogdia, who usurped power from Diodotus II in 224 BC. Literary sources,
Diodotus II
…prevented Seleucid efforts to reincorporate Bactria back into the empire, by allying with the Parthians against them. He was murdered around 225 BC by Euthydemus I, who succeeded him as king. Diodotus's career was recounted by Apollodorus of Artemita in the Parthian History, but this text is lost, and surviving…
Section of the Kuliab inscription written in Greek
Coin of Euthydemus, 'youthful' portrait (type 1).
Coin of Euthydemus, 'middle-aged' portrait (type 3).