 In 406, Germanic and Alan tribes began invading from the West, while the Saxons subjugated the Norman coast.Eventually in 457, Aegidius established the Domain of Soissons in the area (with its seat the town of the same name Soissons, formerly the seat of the Suessiones), independent of and cut off from the Empire but with citizens nevertheless still considering themselves Roman.His son Syagrius succeeded him in 464 and remained until the kingdom was conquered in 486.