In ancient Athens, epigamia ( grc, ἐπιγαμία) designated the legal right to contract a marriage. In particular it regulated the right of intermarrying into another city-state. In the period of Athenian democracy, such intermarriage was not allowed, and only a decree of the popular assembly could permit it. Even resident aliens ( metoeci) did not have the right to marry Athenians. ''Epigamia'' was also a way of formalizing the relationship between different nations. Typically, an ''epigamia'' agreement would allow the adoption of the nationality of the country of residence, for the spouse as well as children. For example, Athens granted epigamia to Euboa in the 5th century, a very rare case. Some cases are known (especially through

Plutarch Plutarch (; grc-gre, Πλούταρχος, ''Ploútarchos''; ; – after AD 119) was a Greek Middle Platonist philosopher, historian, biographer, essayist, and priest at the Temple of Apollo in Delphi. He is known primarily for hi ...

), in which ''epigamia'' was denied between two villages of

Attica Attica ( el, Αττική, Ancient Greek ''Attikḗ'' or , or ), or the Attic Peninsula, is a historical region that encompasses the city of Athens, the capital of Greece and its countryside. It is a peninsula projecting into the Aegean ...

, Pallene and

Hagnous Agnus or Agnous ( grc, Ἀγνοῦς), also Hagnus or Hagnous (Ἁγνοῦς) was a deme of ancient Attica. From the mythical story of the war of the Pallantidae against Theseus, we learn that the demoi of Pallene, Gargettus, and Agnus were ad ...

, presumably because alliances would have been akin to endogamy. In 303 BCE,

Seleucus I Seleucus I Nicator (; ; grc-gre, Σέλευκος Νικάτωρ , ) was a Macedonian Greek general who was an officer and successor ( ''diadochus'') of Alexander the Great. Seleucus was the founder of the eponymous Seleucid Empire. In the pow ...

led an army to the

Indus The Indus ( ) is a transboundary river of Asia and a trans-Himalayan river of South and Central Asia. The river rises in mountain springs northeast of Mount Kailash in Western Tibet, flows northwest through the disputed region of Kashmir, ...

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area, the List of countries and dependencies by population, second-most populous ...

, where he encountered Chandragupta. The confrontation ended with a peace treaty, and "an intermarriage agreement" (epigamia), meaning either a dynastic marriage or a more general agreement for intermarriage between Indians and Greeks. Accordingly, Seleucus ceded to Chandragupta his northwestern territories as far as

Arachosia Arachosia () is the Hellenized name of an ancient satrapy situated in the eastern parts of the Achaemenid empire. It was centred around the valley of the Arghandab River in modern-day southern Afghanistan, and extended as far east as the In ...

and received 500 war elephants (which played a key role in the victory of Seleucus at the

Battle of Ipsus The Battle of Ipsus ( grc, Ἱψός) was fought between some of the Diadochi (the successors of Alexander the Great) in 301 BC near the town of Ipsus in Phrygia. Antigonus I Monophthalmus, the Macedonian ruler of large parts of Asia, and his ...

): :The Indians occupy

n part N, or n, is the fourteenth letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''en'' (pronounced ), plural ''ens''. History ...

some of the countries situated along the Indus, which formerly belonged to the Persians: Alexander deprived the Ariani of them, and established there settlements of his own. But

Seleucus Nicator Seleucus I Nicator (; ; grc-gre, Σέλευκος Νικάτωρ , ) was a Macedonian Greek general who was an officer and successor ( ''diadochus'') of Alexander the Great. Seleucus was the founder of the eponymous Seleucid Empire. In the po ...

gave them to

Sandrocottus Chandragupta Maurya (350-295 BCE) was a ruler in Ancient India who expanded a geographically-extensive kingdom based in Magadha and founded the Maurya dynasty. He reigned from 320 BCE to 298 BCE. The Maurya kingdom expanded to become an empi ...

in consequence of a marriage contract, and received in return five hundred elephants. —

Strabo Strabo''Strabo'' (meaning "squinty", as in strabismus) was a term employed by the Romans for anyone whose eyes were distorted or deformed. The father of Pompey was called " Pompeius Strabo". A native of Sicily so clear-sighted that he could s ...

15.2.9 Strabo 15.2.9
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Notes

Society of ancient Greece Ancient Greek law Seleucid Empire {{AncientGreece-stub