Timeline (No British Isles)

6th Century: Anglo-Saxon tribes migrate to France.

7th Century: Francia kills off the majority the Anglo ethnicity.

9th Century: Holy Roman Empire is established.

9th Century: Viking invasion of France (as they don't invade Britain.)

836: Harald Haddrada invades France.

847: Kingdom of France collapses. The east is annexed by the Holy Roman Empire whilst the north-west becomes Normandy. The rest is controlled by small tribes.

11th Century: William I of Normandy (OTL William the Conqueror) conquers tribal France. Duchy of Normandy becomes the Kingdom of Normandy.

1078: Norman-Roman War: Normandy goes to war with the Holy Roman Empire.

1085: William I dies. His son, William II of Normandy, becomes king of Normandy.

1096: Holy Roman Empire collapses. Normandy annexes the east. Five new nations are created: Kingdom of Saxony, Kingdom of Lombardy, Empire of Papal and the Kingdom of Bohemia.

1112: William II dies. Harold I (William's child) takes over.