From Wikipedia.org “Rouen” (https://en.wikipedia.org/wiki/Rouen)
The Middle Ages Primitive XIV Ce. timber framing, rue du Petit Mouton
From their first incursion into the lower valley of the Seine in 841, the Vikings overran Rouen until some of them finally settled and founded a colony led by Rollo(Hrolfr), who was nominated count of Rouen by the king of the Franks in 911. In the 10th century Rouen became the capital of the Duchy of Normandy and residence of the dukes, until William the Conqueror established his castle at Caen.
In the early 1100s the city's population reached the size of 30,000. In 1150, Rouen received its founding charter, which permitted self-government. During the 12th century, Rouen was probably the site of a Jewish yeshiva. At that time, about 6,000 Jews lived in the town, comprising about 20% of the total population. In addition, there were a large number of Jews scattered about another 100 communities in Normandy. The well-preserved remains of a medieval Jewish building, that could be a yeshiva, were discovered in the 1970s under the Rouen Law Courts.
In 1200, a fire destroyed part of the old Romanesque cathedral, leaving St Romain's tower, the side porches of the front, and part of the nave. New work on the present Gothic cathedral of Rouen was begun, in the nave, transept, choir, and the lowest section of the lantern tower. On 24 June 1204, Philip II Augustus of France entered Rouen and annexed Normandy to theFrench Kingdom. The fall of Rouen meant the end of Normandy's sovereign status. He demolished the Norman castle and replaced it with his own, the Château Bouvreuil, built on the site of the Gallo-Roman amphitheatre.
A textile industry developed based on wool imported from England, for which the northern County of Flanders and Duchy of Brabant were constantly fierce but worthy competitors, and finding its market in the Champagne fairs. Rouen also depended for its prosperity on the river traffic of the Seine, on which it enjoyed a monopoly that reached as far upstream as Paris. Wine and wheat were exported to England, with tin and wool received in return.
In the 14th century urban strife threatened the city: in 1291, the mayor was assassinated and noble residences in the city were pillaged. Philip IV reimposed order and suppressed the city's charter and the lucrative monopoly on river traffic, but he was quite willing to allow the Rouennais to repurchase their former liberties in 1294. In 1306, he decided to expel the Jewish community of Rouen, which then numbered some five or six thousand in the city of 40,000 people.
During the Hundred Years' War, on 19 January 1419, Rouen and its population of 70,000 surrendered to Henry V of England, who annexed Normandy once again to the Plantagenet domains. But Rouen did not go quietly: Alain Blanchard hung English prisoners from the walls, for which he was summarily executed; the Canon and Vicar General of Rouen, Robert de Livet, became a hero for excommunicating the English king, resulting shortly after in de Livet's himself imprisonment for five years in England.
Rouen became the capital city of English power in occupied France and when the Duke of Bedford, John of Lancaster bought Joan of Arc from his ally, the Duke of Burgundy who had been keeping her in jail since May 1430, she was sent to be tried in this city on Christmas 1430. After a long trial by a church court, sentenced to be burned at the stake. The sentence was carried out on 30 May 1431 in this city, where most inhabitants supported the Duke of Burgundy, Joan of Arc's royal enemy.
The king of France Charles VII recaptured the town in 1449, 18 years after the death of Joan of Arc and after 30 years of English occupation. In that same year the young Henry VI was crowned king of England and France in Paris before coming to Rouen where he was acclaimed by the crowds.