He is specifically indicated as fighting the Saxons in the 9th - century text Historia Brittonum and in works based on it .
Arthur was often seen as protector figure who defended the Britons against all manner of threats .
Arthur is specifically indicated as fighting the Saxons in the 9th - century text Historia Brittonum and in works based on it .
Arthur was often seen as protector figure who defended the Britons against all manner of threats .