Diodotus II - Wikipedia

Diodotus II (Greek: Διόδοτος Β΄; c. 252 BC – c. 223 BC) was a Greco-Bactrian king from c. 239 BC, son of Diodotus I. He is known for concluding a peace treaty with the Parthian king Arsaces, in order to forestall the Seleucid reconquest of both Parthia and Bactria:

"Soon after, relieved by the death of Diodotus I, Arsaces made peace and concluded an alliance with his son, also by the name of Diodotus; some time later he fought against Seleucos who came to punish the rebels, but he prevailed: the Parthians celebrated this day as the one that marked the beginning of their freedom" (Justin, XLI,4 ^[1])

Around 230 or 223 BC, Diodotus was killed by an usurper, his brother-in-law Euthydemus I, founder of the Greco-Bactrian Euthydemid dynasty:

For Euthydemus himself was a native of Magnesia, and he now, in defending himself to Teleas, said that Antiochus was not justified in attempting to deprive him of his kingdom, as he himself had never revolted against the king, but after others had revolted he had possessed himself of the throne of Bactria by destroying their descendants.... (Polybius, 11.34, 2 [1])

Notes

^ Justin XLI

Preceded by:
Diodotus I

Greco-Bactrian Ruler

Succeeded by:
Antiochus Nikator or Euthydemus I

Dates	Dynastic lineage	Bactrian domain	Expansion into India
Greco-Bactrian kings
280 BCE	Foundation of the Hellenistic city of Ai-Khanoum in Bactria (280 BCE)
255 BCE	Independence of the Greco-Bactrian Kingdom from the Seleucid Empire (255 BCE)
255–239 BCE	House of Diodotus	Diodotus I
239–223 BCE	House of Diodotus	Diodotus II
230–200 BCE	House of Euthydemus	Euthydemus I
200–180 BCE		Demetrius I	Pantaleon
180 BCE		Euthydemus II	Agathokles
180–170 BCE		Antimachus I	Apollodotus I
170–145 BCE	House of Eucratides	Eucratides I	Demetrius II
145 BCE	Destruction of Ai-Khanoum by the Yuezhi in 145 BCE		... Succession of Indo-Greek kings to the 1st century CE ...
145–140 BCE	House of Eucratides	Plato Eucratides II
140–130 BCE	House of Eucratides	Heliocles I
130 BCE	Complete occupation of Bactria by the Yuezhi

v t e Hellenistic rulers
Argeads	Philip II Alexander III the Great Philip III Arrhidaeus Alexander IV
Antipatrids	Cassander Philip IV Alexander V Antipater II Antipater Etesias Sosthenes
Antigonids	Antigonus I Monophthalmus Demetrius I Poliorcetes Antigonus II Gonatas Demetrius II Aetolicus Antigonus III Doson Philip V Perseus Philip VI (pretender)
Ptolemies	Ptolemy I Soter Ptolemy Keraunos Ptolemy II Philadelphus Ptolemy III Euergetes Ptolemy IV Philopator Ptolemy V Epiphanes Cleopatra I Syra (regent) Ptolemy VI Philometor Ptolemy VII Neos Philopator Cleopatra II Philometor Soter Ptolemy VIII Physcon Cleopatra III Ptolemy IX Lathyros Ptolemy X Alexander Berenice III Ptolemy XI Alexander Ptolemy XII Auletes Cleopatra VI Tryphaena Berenice IV Epiphanea Ptolemy XIII Ptolemy XIV Cleopatra VII Philopator Ptolemy XV Caesarion
Monarchs of Cyrene	Magas Berenice II Demetrius the Fair Ptolemy VIII Physcon Ptolemy Apion Cleopatra Selene II
Seleucids	Seleucus I Nicator Antiochus I Soter Antiochus II Theos Seleucus II Callinicus Seleucus III Ceraunus Antiochus III the Great Seleucus IV Philopator Antiochus IV Epiphanes Antiochus V Eupator Demetrius I Soter Alexander I Balas Demetrius II Nicator Antiochus VI Dionysus Diodotus Tryphon Antiochus VII Sidetes Alexander II Zabinas Cleopatra Thea Seleucus V Philometor Antiochus VIII Grypus Antiochus IX Cyzicenus Seleucus VI Epiphanes Antiochus X Eusebes Antiochus XI Epiphanes Demetrius III Eucaerus Philip I Philadelphus Antiochus XII Dionysus Cleopatra Selene I Antiochus XIII Asiaticus Philip II Philoromaeus
Lysimachids	Lysimachus Ptolemy Epigonos
Attalids	Philetaerus Eumenes I Attalus I Eumenes II Attalus II Attalus III Eumenes III
Greco-Bactrians	Diodotus I Diodotus II Euthydemus I Demetrius I Euthydemus II Antimachus I Pantaleon Agathocles Demetrius II Eucratides I Plato Eucratides II Heliocles I
Indo-Greeks	Demetrius I Antimachus I Pantaleon Agathocles Apollodotus I Demetrius II Antimachus II Menander I Zoilos I Agathokleia Lysias Strato I Antialcidas Heliokles II Polyxenos Demetrius III Philoxenus Diomedes Amyntas Epander Theophilos Peukolaos Thraso Nicias Menander II Artemidoros Hermaeus Archebius Telephos Apollodotus II Hippostratos Dionysios Zoilos II Apollophanes Strato II Strato III
Monarchs of Bithynia	Boteiras Bas Zipoetes I Nicomedes I Zipoetes II Etazeta (regent) Ziaelas Prusias I Prusias II Nicomedes II Nicomedes III Nicomedes IV Socrates Chrestus
Monarchs of Pontus	Mithridates I Ctistes Ariobarzanes Mithridates II Mithridates III Pharnaces I Mithridates IV Philopator Philadephos with Laodice Mithridates V Euergetes Mithridates VI Eupator Pharnaces II Darius Arsaces Polemon I Pythodorida Polemon II
Monarchs of Commagene	Ptolemaeus Sames II Mithridates I Antiochus I Mithridates II Antiochus II Mithridates III Antiochus III Antiochus IV
Monarchs of Cappadocia	Ariarathes I Ariarathes II Ariamnes II Ariarathes III Ariarathes IV Ariarathes V Orophernes Ariarathes VI Ariarathes VII Ariarathes VIII Ariarathes IX Ariobarzanes I Ariobarzanes II Ariobarzanes III Ariarathes X Archelaus
Monarchs of the Cimmerian Bosporus	Paerisades I Satyros II Prytanis Eumelos Spartokos III Hygiainon (regent) Paerisades II Spartokos IV Leukon II Spartokos V [ru] Kamasarye Paerisades III Paerisades IV Paerisades V Mithridates I Pharnaces Asander with Dynamis Mithridates II Asander with Dynamis Scribonius's attempted rule with Dynamis Dynamis with Polemon Polemon Aspurgus Gepaepyris Mithridates III Cotys I
Monarchs of Epirus	Admetus Tharrhypas Alcetas I Neoptolemus I Arybbas Alexander I Aeacides Neoptolemus II Alcetas II Pyrrhus I Alexander II Olympias II (regent) Pyrrhus II Ptolemy Pyrrhus III Deidamia
Hellenistic rulers were preceded by Hellenistic satraps in most of their territories.