The Roman family which Arthur rescues lives north of Hadrian's Wall. This mission would be unlikely because the Wall represented the extent of Roman rule in Britain, except for brief periods of occupation during the 2nd century AD during which time they got as far north as Falkirk in the Central Lowlands of Scotland, where pieces of the Antonine Wall are still visible; particularly in Callendar Park. Romanized client states such as that of the Votadini did exist north of the wall even into the Sub-Roman era.