North Tawton 600 ft (185m) east-west by 390 ft (120m), and was located adjoining the Roman road between "Isca Dumnoniorum" (Exeter) and Okehampton. In addition, the site of a temporary marching camp has been identified half a mile to the north. By the time of the Domesday survey (1086), there were six farm / manor holdings in what is now North Tawton Parish, including that of Tawton which was the forerunner of the town we know today. St Peter's Church is first recorded in 1257. Only the tower of the present building dates from that time, with the rest being mostly 14th
Isca Augusta legion was needed to repel a potential invasion from the Continent. The stone from Isca may have been used for building defences on the south coast. There may still have been an occasional military presence as late as the early 4th century, but the fortress was probably later taken over by the people of the surrounding vicus. The basilica of the baths was used as a cattle pen. Recent finds suggest Roman occupation of some kind as late as AD 380. According to the Gildas (followed by Bede), Roman Caerleon was the site of two early Christian martyrdoms in Britain,