When the Roman forces withdrew from Britain in the 4th century to defend their empire from invading Visigoths, they left the Romano-Britains with no formal government control. Without a Roman army of occupation it led to struggles by various groups to gain power. Waves of immigrants from Saxony in North Germany and Jutland in Denmark crossed the North Sea. In their attempts to gain control and settle the area, existing settlements may have been destroyed. If it was a good site, the Saxons or Jutes would have built their own settlement on it, using the available wood or stone as building materials.
Once the Saxon kings had taken control, they rewarded their military and religious leaders with tracts of land. In an attempt to share out the land in an equitable way the parishes tended to be in a rectangular form, about 3 km. long and 1.5 km. wide. This was laid out to allow a range of relief, soils and drainage to be exploited by the tenants. The parishes of Everton and Tetworth stretched SE - NW from the sandy ridge top soils, down the slope onto isolated patches of sand and gravel surrounded by the much heavier clay of the valley floor towards the River Ivel at Tempsford. The Roman road bisected the parish but whether it was still used for transport is not known.
The Lord of the Manor rented out strips of land to their tenants. According to the Domesday Book, immediately prior to the French lords taking over there was a small, stone church and 30 tenants. Their cottages were probably close to the present site of the Church where five trackways converged.
Whilst there is no evidence that the Viking invasion ever reached this area, local gossip suggests that a Viking longboat is buried under Warden Hill. (Conversation with Peggy Arnfield?)
There was probably some impact following the invasion of the Danes as a few miles to the west, their army constructed what is now known as Cannock's Castle in Tempsford. It was a Danish outpost controlling the confluence of the Great Ouse and the river Ivel.