410 A.D. To 850 A.D.
475, Vortimer, King of the Britons, was buried in Lincoln.
518. Lincoln besieged by the Saxons under Cerdic and Colgern, relieved, and the invaders defeated by Arthur King of the Britons.
584 Kingdom of Mercia is established
629 Paulinus converted Blaecca, Praefectus Civitatis (an early city sheriff) of Lincoln, and his family to Christianity. It is believed that the church of St Paul in the Bail was named after Paulinus and that there had been a Christian church on the site since Roman times.
653 MInster church founded, predecessor to Lincoln Cathedral
839 Viking invasion of Lincoln