The Foxes of Warwick

Fortunatus est ille deos qui novit agrestis

All were ready to conspire together to recover their former liberty, and bind themselves by weighty oaths against the Normans.

In the regions north of the Humber violent disturbances broke out … To meet the danger the King rode to all the remote parts of his kingdom and fortified strategic sites against enemy attacks.

For the fortifications called castles by the Normans were scarcely known in the English provinces, and so the English -

in spite of their courage and love of fighting — could put up only a weak resistance to their enemies. The King built a castle at Warwick and gave it into the keeping of Henry, son of Roger of Beaumont …

Orderic Vitalis