(from the article `Low Countries, history of`) ...line between Celtic and Germanic peoples. On the coast of northern France and in Flanders lived the Morini; to the north of them, between the ... Found on http://www.britannica.com/eb/a-z/n/26
The Nervii were an ancient Gallic tribe, belonging to the Belgic Gauls. Their territory extended from the river Sabis (Sambre) to the sea in modern Hainault. They were subdued by Julius Caesar in 57 BC. Found on http://www.probertencyclopaedia.com/browse/CXN.HTM