He was the father of orator Lysias, philosopher Polemarchus and Euthydemus.

Euthydemus was defeated by Antiochus at the Battle of the Arius but after sustaining a famous siege in his capital Bactra ( Balkh ), he obtained an honourable peace by which Antiochus promised Euthydemus ' son Demetrius the hand of one of his daughters.

Classical accounts also relate that Euthydemus negotiated peace with Antiochus III by suggesting that he deserved credit for overthrowing the descendants of the original rebel Diodotus, and that he was protecting Central Asia from nomadic invasions thanks to his defensive efforts:

Diodotus II was subsequently killed by a usurper, Euthydemus, founder of the Greco-Bactrian Euthydemid dynasty ( Polyb.

He was the son of Euthydemus and succeeded him around 200 BC, after which he conquered extensive areas in what now is eastern Iran, Afghanistan and Pakistan thus creating an Indo-Greek kingdom far from Hellenistic Greece.

The father of Demetrius, Euthydemus, was attacked by the Seleucid ruler Antiochus III around 210 BC.

The fleet was now commanded by Demosthenes, Menander, and Euthydemus, while the Syracusan fleet was led by Sicanus and Agatharchus of Syracuse on the wings and Pythen from Corinth in the centre.

Euthydemus was attacked by the Seleucid ruler Antiochus III around 210 BC.

Classical accounts also relate that Euthydemus negotiated peace with Antiochus III by suggesting that he deserved credit for overthrowing the original rebel Diodotus, and that he was protecting Central Asia from nomadic invasions thanks to his defensive efforts:

Kings Euthydemus, Euthydemus II, Agathocles and Pantaleon made these coin issues around 170 BC and it has alternatively been suggested that a nickeliferous copper ore was the source from mines at Anarak.

Demetrius I was the son of Euthydemus I of Bactria ; there is an inscription from his father's reign already officially hailing him as victorious.

Eucratides came to the throne by overthrowing the dynasty of Euthydemus I in Bactria, whose son Demetrius was conquering northwestern India.

That Antimachos would list his own associate kings argues strongly against the suggestion that he was appointed as a Northern associate ruler of Euthydemus and Demetrius, an idea that anyway is more or less unprecedented among Hellenistic kings.

Euthydemus II was a son of Demetrius I of Bactria, and became king of Bactria in the 180s BCE, either after his father's death or as a sub-king to him.

In that case, he was a grandson of Euthydemus whom he qualified on his coins as " Basileas Theos " (" Βασιλέας Θεός " Greek for " God-King ").

Around 230 or 223 BC, Diodotus was killed by an usurper, his brother-in-law Euthydemus I, founder of the Greco-Bactrian Euthydemid dynasty ( Polybius, 11. 34, 2 ).

Euthydemus was a tyrant of the ancient Greek city-state of Sicyon in the 3rd century BC.

He was the author of editions of the Euthydemus and Gorgias of Plato ( 1784 ), to which Karl Wilhelm Dindorf declared himself indebted for his first ideas of Greek criticism, and of Gilbert Burnet's History of his Own Time ( 2nd ed., 1833 ) and History of the Reign of King James the Second ( 1852 ).

* Euthydemus I of the Greco-Bactrian Kingdom dies and is succeeded by his son Demetrius I of Bactria ( approximate date ).

* Antiochus III advances into Bactria, which is ruled by the Greco-Bactrian king Euthydemus I, and again meets with success.

* King Diodotus II of Bactria is killed by an usurper, Euthydemus I, founder of the Greco-Bactrian Euthydemid dynasty.

Euthydemus I ( Greek: Εὐθύδημος Α ΄) ( c. 260 BC – 200 / 195 BC ), Greco-Bactrian king in about 230 or 223 BCE according to Polybius., he is thought to have originally been a Satrap of Sogdiana, who overturned the dynasty of Diodotus of Bactria and became a Greco-Bactrian king.

:" The Greeks who caused Bactria to revolt grew so powerful on account of the fertility of the country that they became masters, not only of Ariana, but also of India, as Apollodorus of Artemita says: and more tribes were subdued by them than by Alexander -- by Menander in particular ( at least if he actually crossed the Hypanis towards the east and advanced as far as the Imaüs ), for some were subdued by him personally and others by Demetrius, the son of Euthydemus the king of the Bactrians ; and they took possession, not only of Patalena, but also, on the rest of the coast, of what is called the kingdom of Saraostus and Sigerdis.

Antiochos III, the Seleucid king, after having made peace with Euthydemus in Bactria, went to India in 206 BC and is said to have renewed his friendship with the Indian king there:

This unusual representation of Herakles is the same as the one on the back of Demetrius ' coins, and it is exclusively associated to him ( and his son Euthydemus II ), seen only on the back of his coins.

Most of these are purely geographical claims, but he does mention that Eratosthenes ' sources say that some of the Greek kings conquered further than Alexander ; Strabo does not believe them on this, but modern historians do ; nor does he believe that Menander and Demetrius son of Euthydemus conquered more tribes than Alexander There is half a story about Menander in one of the books of Polybius which has not come down to us intact.

Euthydemus is pictured as a boy on his coins and most likely died very young.

Agathocles issued a series of " pedigree " dynastic coins, probably with the intent to advertise his lineage and legitimize his rule, linking him to Alexander the Great, a king Antiochus Nikator ( Greek: " Νικάτωρ " " Victorious ", probably intended is Antiochus III ), the founder of the Greco-Bactrian kingdom Diodotus and his son Diodotus II, Euthydemus, Pantaleon, and Demetrius.

Another Euthydemos is the eponymous character in one of Plato's dialogues, Euthydemus, written on logic and logical fallacies, or sophisms.

Plato made extensive use of this tone in his Gorgias, Euthydemus, Republic, and Laws, and it is thematic in Xenophon's Symposium and the fourth book of his Memorabilia.

:" The Greeks who caused Bactria to revolt grew so powerful on account of the fertility of the country that they became masters, not only of Ariana, but also of India, as Apollodorus of Artemita says: and more tribes were subdued by them than by Alexander -- by Menander in particular ( at least if he actually crossed the Hypanis towards the east and advanced as far as the Imaus ), for some were subdued by him personally and others by Demetrius, the son of Euthydemus the king of the Bactrians ; and they took possession, not only of Patalena, but also, on the rest of the coast, of what is called the kingdom of Saraostus and Sigerdis.

:" The Greeks who caused Bactria to revolt grew so powerful on account of the fertility of the country that they became masters, not only of Ariana, but also of India, as Apollodorus of Artemita says: and more tribes were subdued by them than by Alexander — by Menander in particular ( at least if he actually crossed the Hypanis towards the east and advanced as far as the Imaüs ), for some were subdued by him personally and others by Demetrius, the son of Euthydemus the king of the Bactrians.

* Euthydemus ( commander ), ( late 5th century BC ) a fleet commander for Athens during the Sicilian Expedition, 415 to 413 BC

* Euthydemus ( tyrant ), ( 3rd century BC ) a tyrant of Sicyon

* Euthydemus ( dialogue ), a dialogue by Plato

Distrusting tradition, he took a few of the finest dialogues as his standard, and from internal evidence denounced as spurious not only those generally admitted to be so ( Epinomis, Minos, Theages, Rivales, Clitophon, Hipparchus, Eryxias, Letters and Definitions ), but also the Meno, Euthydemus, Charmides, Lysis, Laches, First and Second Alcibiades, Hippias Major and Minor, Ion, Euthyphro, Apology, Crito, and even ( against Aristotle's explicit assertion ) The Laws.

Demetrius ( son of the Greco-Bactrian king Euthydemus ) invaded northern India in 180 BCE as far as Pataliputra and established an Indo-Greek kingdom.

The Bactrian king Euthydemus and his son Demetrius crossed the Hindu Kush mountains and began the conquest of the Indus valley.

After resisting a siege of his capital Bactra ( Balkh ) by the Seleucids, Euthydemus obtains an honourable peace by which Antiochus promises Euthydemus ' son Demetrius the hand of one of his daughters.

:" And after several journeys of Teleas to and fro between the two, Euthydemus at last sent his son Demetrius to confirm the terms of the treaty.

:" Heliodotos dedicated this fragrant altar (...) so that the greatest of all kings Euthydemus, as well as his son, the glorious, victorious and remarkable Demetrius, be preserved of all pains, with the help of the Fortune with divine thoughts "

Tarn and numismatist Robert Senior place Antimachus as a member of the Euthydemid dynasty and probably as a son of Euthydemus and brother of Demetrius.

* Euthydemus, ( 5th / 4th century BC ) son of Cephalus, mentioned in Plato's Republic

Zoilos I uses a silver coin type similar to that of Euthydemus II, son of Demetrius: Crowned Herakles standing, holding a wreath or diadem in his right hand, and a club and the lion skin in his left hand.