Bactria, Eucratides c. 171-145 BC. Obol, 0.57g.

Eucratides I (Ancient Greek: Εὐκρατίδης, Eukratídēs, reigned 172/171–145 BC), also called Eucratides the Great,^[1] and Evukratida in Indian sources,^[2] was one of the most important Greco-Bactrian kings.^[1][3] He conquered large parts of northern India,^[4] and minted a vast and prestigious coinage, suggesting a rule of considerable importance and prosperity. His immediate successors were the last Greek kings to rule in Bactria.^[5]

Eucratides' name is derived from the name Eucrates (Ancient Greek: Εὐκράτης), which means "good power or rule", and the patronymic suffix -ῐ́δης, meaning "descendant of". His name therefore means "descendant of Eucrates", and may possibly have had a grandfather or another male ancestor named Eucrates.^[6]