Under Roman rule, some Britons north of the Humber practised Christianity. In fact, York had a bishop as early as the fourth century. After the Romans left Britain in the early fifth century, Christianity did not disappear, but it existed alongside Celtic paganism, and possibly many other cults. Anglo-Saxons brought their own Germanic pagan beliefs and practices when they settled there. At Yeavering, in Bernicia, excavations have uncovered evidence of a pagan shrine, animal sacrifice, and ritual burials.