Their ancestors had, in former times, succeeded the Phoenicians in the island of Rhodes, and they likewise succeeded them in the south of Gaul, and founded, at the mouth of the Rhone, a colony called Rhodanusia or Rhoda, with the same name as that which they had already founded on the north-east coast of Spain, and which is nowadays the town of Rosas, in Catalonia.

But the importance of the Rhodians on the southern coast of Gaul was short-lived.

It had already sunk very low in the year 600 B.C., when Euxenes, a Greek trader, coming from Phocea, an Ionian town of Asia Minor, to seek his fortune, landed from a bay eastward of the Rhone.

The Segobrigians, a tribe of the Gallic race, were in occupation of the neighboring country.

Nann, their chief, gave the strangers kindly welcome, and took them home with him to a great feast which he was giving for his daughter's marriage, who was called Gyptis, according to some, and Petta, according to other historians.