structural:reformatting
Pre-1500

Historical Antwerp allegedly had its origins in a Gallo-Roman vicus. Excavations carried out in the oldest section near the Scheldt in 1952–1961 (ref. Princeton), produced pottery shards and fragments of glass from mid-2nd century to the end of the 3rd century. In the 4th century, Antwerp was first named, having been settled by the Germanic Franks.

The Merovingian Antwerp was evangelized by Saint Amand in the 7th century. Het Steen Castle has its origins in the Carolingian period in the 9th century. The castle may have been built after the Viking incursions in the early Middle Ages; in 879 the Normans invaded Flanders. The surviving structure was built between 1200 and 1225 as a gateway to a larger castle of the Dukes of Brabant which was demolished in the 19th century. It is Antwerp's oldest building. At the end of the 10th century, the Scheldt became the boundary of the Holy Roman Empire. Antwerp became a margraviate in 980, by the German emperor Otto II, a border province facing the County of Flanders.

In the 11th century, the best-known leader of the First Crusade (1096–1099), Godfrey of Bouillon, was originally Margrave of Antwerp, from 1076 until his death in 1100, though he was later also Duke of Lower Lorraine (1087–1100) and Defender of the Holy Sepulchre (1099–1100). In the 12th century, Norbert of Xanten established a community of his Premonstratensian canons at St. Michael's Abbey at Caloes. Antwerp was also the headquarters of Edward III during his early negotiations with Jacob van Artevelde, and his son Lionel, the Duke of Clarence, was born there in 1338.