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 of the period have been excavated. For the Romans, Eboracum, was the major military base in the north of Britain and, following the 3rd century division of the province of Britannia, the capital of northern Britain, Britannia Inferior. By 237 Eboracum had been made a colonia, the highest legal status a Roman city could attain, one of only four in Britain and the others were founded for retired soldiers. This mark of Imperial favour was probably a recognition of Eboracum as the largest town in the north and the capital of Britannia Inferior. At around the same time Eboracum became