Archaic Greeks arrived to the Peninsula by the late 7th century BCE. They founded Greek colonies such as Empúries (570 BCE). Empúries was founded on a small island at the mouth of the river Fluvià, in a region inhabited by the Indigetes (at the present time, the mouth of the Fluvià is about 6 km to the north). After the conquest of Phocaea by the Persian king Cyrus II in 530 BCE, the new city's population increased considerably through the influx of refugees. Established by Greek fisherman, merchants, and settlers from Phocaea in c. 575 BCE, Empúries was the most westerly ancient Greek colony documented in the Mediterranean and retained a distinct cultural identity for nearly a thousand years. The Greeks are responsible for the name Iberia, apparently after the river Iber (Ebro).