Eboracum over Britain. Whilst the latest datable inscription referencing "Eboracum" dates from AD237, the continuation of the settlement after this time is certain. Building work in the city continued in the fourth century under Constantine and later Count Theodosius. The locally produced Crambeck Ware pottery arrives in "Eboracum" in the fourth century – the most famous form being intricately decorated buff-yellow 'parchment ware' painted with bright shades of red. The effect of Constantine's religious policy allowed the greater development of Christianity in Roman Britain – a bishop of York named 'Eborius' is attested here and several artifacts decorated with chi-rho symbols
Eboracum years. Estimates suggest that over 48,000m of stone were required, largely consisting of Magnesian Limestone from the quarries nearby the Roman settlement of Calcaria (Tadcaster). There is evidence that the Emperor Hadrian visited in 122 on his way north to plan his great walled frontier. He certainly brought with him the Sixth Legion to replace the existing garrison. Emperor Septimius Severus visited Eboracum in 208 and made it his base for campaigning in Scotland. (The fortress wall was probably reconstructed during his stay and at the east angle it is possible to see this work standing almost to full height.)