Origin of the city

The legend of "Lydéric and Phinaert" puts the foundation of the city of "L'Isle" at 640. Although the first mention of the town appears in archives from the year 1066, some archeological digs seem to show the area as inhabited by as early as 2000 BC, most notably in the modern-day quartiers of Fives, Wazemmes, and Old Lille.
The original inhabitants of this region were the Gauls, such as the Menapians, the Morins, the Atrebates, and the Nervians, who were followed by Germanic peoples, the Saxons and the Frisians, and the Franks later.
From 830 until around 910, the Vikings invaded Flanders. After the destruction caused by Norman and Magyar invasion, the eastern part of the region fell under the eyes of the area's princes.
The name Lille comes from insula or l'Isla, i. "the island", since the area was at one time marshy. This name was used for the castle of the Counts of Flanders, built on dry land in the middle of the marsh.
The Count of Flanders controlled a number of old Roman cities (Boulogne, Arras, Cambrai) as well as some founded by the Carolingians (Valenciennes, Saint-Omer, Ghent, Bruges).
The County of Flanders thus extended to the left bank of the Scheldt, one of the richest and most prosperous regions of Europe.