These probably came from North Britain.
York is known to have been occupied by the Britons, and was chosen by the Romans as their most important centre in north Britain and named Eboracum or Eburacur.
Sandstone, and clays suitable for brick-making, are found in the district of Scotland, so called from a fancied resemblance to the Highlands of North Britain.
The frontier of Dacia was successfully defended against the Scythians and Sarmatians, and a tract of territory reconquered in north Britain.
The name of Britain or North Britain is still firmly associated with Scotland; thus English letters are generally addressed, e.g.