Romano-British culture is the culture that arose in Britain under the Roman Empire following the Roman conquest in AD 43 and the creation of the province of Britannia. It arose as a fusion of the imported Roman culture with that of the indigenous Britons, a people of Celtic language and custom. It survived the 5th century Roman departure from Britain. Scholars such as Christopher Snyder believe that during the 5th and 6th centuries – approximately from AD 410 when the Roman legions withdrew, to AD 597 when St Augustine of Canterbury arrived – southern Britain preserved an active sub-Roman culture that survived the attacks from the Anglo-Saxons and even used a vernacular Latin when writing.