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Guest Author:
Chris Snyder

  Chris Snyder, Dr. Snyder is Acting Chair of the Department of History and Politics at Marymount University in Arlington, Virginia.  He earned his Ph.D. in Medieval History at Emory University in 1994 and taught at Emory and the College of William and Mary before coming to Marymount.  Dr. Snyder's publications include Sub-Roman Britain (AD 400-600): A Gazetteer of Sites (Oxford, 1996), An Age of Tyrants: Britain and the Britons, AD 400-600 (Penn State, 1998). and The World of King Arthur. He has a new book (forthcoming) titled The Britons.  Dr. Snyder serves on the editorial boards of History Reviews On-line and ORB: On-line Reference Book for Medieval Studies, and is a Fellow of the Society of Antiquaries of Scotland. He also maintains the Arthuriana Chronology.

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Sub-Roman Britain
an Introduction
Christopher Snyder

first published on the ORB
first published on the ORB

"Sub-Roman Britain" is a label applied by specialists to Britannia in the fifth and sixth centuries AD. Geographically, Britannia is that territory south of the Forth-Clyde line that was part of the Roman Empire from AD 43 to 410. Gaining their independence from Rome, the sub-Roman Britons created a culture that was a unique hybrid of Roman, native "Celtic," and Christian elements. These first two centuries of the Early Middle Ages also gave birth to medieval kingdoms that would become England, Scotland, and Wales. Vibrant yet enigmatic, the sub-Roman period came to an end with the expansion of the Anglo-Saxons westward in the late sixth century and the establishment of a Roman ecclesiastical mission in Kent in 597.

This period has become more popularly known as the Age of Arthur. Both King Arthur and Merlin are associated with these two centuries, Arthur as a warleader battling the Saxon invaders and Merlin as a British bard with prophetic gifts. Modern quests for the historical Arthur (e.g. Alcock 1971; Morris 1973; Ashe 1985) and Merlin (Tolstoy 1985) have increased popular interest in the period, but have convinced few historians (Dumville 1977). Indeed, the limitations of both the historical and archaeological evidence have made it difficult to discuss any person, place, or event in sub-Roman Britain with confidence, leaving us with cautious and colorless models that admittedly lack the appeal of Arthurian romance (Thomas 1981, 245-53). Historians, it has recently been declared, can as yet say little of value about King Arthur (Charles-Edwards 1991).

Historians can, however, say much of value about the fifth and sixth centuries, the period in which either Arthur or his legend was born. To do this we should eventually discard the label "sub-Roman," first used by archaeologists to describe fifth-century pottery that had "degenerated" from Roman forms. To say that sub-Roman Britain was simply "Roman Britain in decay" is to overlook both its achievements (monasticism, penitentials) and the continuity with its Roman (Latin education, Mediterranean trade) and Celtic (La Tne jewelry, the bardic tradition) past. Accessing the culture of the sub-Roman Britons, however, means dealing with three often difficult types of evidence: literary, epigraphic, and archaeological.

Written Sources

The literary evidence for sub-Roman Britain is quite sparse compared to such contemporary societies as Frankish Gaul and the Byzantine East. Britain produced only two native writers (they were hardly historians) in this period--the clerics Patrick and Gildas--and received few mentions in Continental chronicles. The historical narrative for Britain is detailed for the late fourth century, but dwindles after the first decade of the fifth century and remains dark until the Northumbrian scholar Bede began compiling information for his Ecclesiastical History of the English People in the late seventh century.

Several writers record barbarian raids which devastated the British provinces in 360 and 367 (Ammianus Marcellinus 20.1 and 27.8), 382 and 408 (Gallic Chronicle of 452). The situation was made worse by the withdrawal of troops from Britain by Magnus Maximus in 383, Stilicho in 402, and Constantine III in 407, all of which were the results of political and military turmoil on the Continent. The Roman civil and military administration in Britain took matters in its own hands, electing three successive "tyrants"--Marcus, Gratian, and Constantine--in 406, a traumatic year which ended with barbarians (Alans, Sueves, and Vandals) swarming across the frozen Rhine.

The last of these British usurpers took the title Constantine III, and crossed to Gaul with an army to secure the western frontiers and make good his imperial claims. This Constantine's story is ultimately one of betrayal and defeat, ending with his capture at Arles in 411 and subsequent execution (Orosius, Adversum Paganos 7.42.1-4). Interesting events, however, began unfolding in Britain soon after Constantine's departure. The barbarian devastations of 408, in particular the sea-borne raids of Saxons, led the Britons to make a bid for political and military independence from Rome. The following account of these events is from the Byzantine historian Zosimus:

The barbarians . . . reduced the inhabitants of Britain and some of the Gallic peoples to such straits that they revolted from the Roman empire, no longer submitted to Roman law, and reverted to their native customs. The Britons, therefore, armed themselves and . . . freed their cities from the attacking barbarians. The whole of Armorica and other Gallic provinces, in imitation of the Britons, freed themselves in the same way, by expelling the Roman magistrates and establishing the government they wanted (Zosimus, New History 6.5.2-3).

This "revolution" has been variously interpreted as a struggle between pro-Roman/Catholic and pro-Celtic/Pelagian parties (Myres 1960; Morris 1965), a class-struggle between bacaudae (dissident peasants) and landowners (Thompson 1977; Wood 1984), and a political coup staged by urban elites (Snyder, forthcoming). Whatever the nature of the revolt, it was officially recognized by the emperor Honorius, who, in 410, sent letters to the cities of Britain giving them "permission" to fend for themselves (Zosimus 6.10.2). After 410, Rome was no longer able to assert control over Britain (Procopius, Bellum Vandalicum 3.2.38), and the island came to be ruled by a multitude of Romano-British "tyrants" (Jerome, Epistola 133.9,14) as well as by the Saxon newcomers (Gallic Chronicle of 511).

It is impossible to write a narrative history of sub-Roman Britain after 410. The only datable references to Britain in contemporary documents are the recording of two visits of St. Germanus of Auxerre to the island to fight Pelagianism in 429 (Prosper, Chronicon) and c.445 (Constantius, Life of St. Germanus 5.25), and a chronicle entry for the year 441 stating that at least a portion of the island had "passed into the power of the Saxons" (Gallic Chronicle of 452). The next securely datable events in British history begin with St. Augustine's arrival in Kent in 597.

For the interim period, historians are forced to deal with a lot of "unhistorical" material which is devoid of dates and often of personal and place names. For the fifth century we have the writings of Patrick, a Briton who became the most famous (and arguably the most successful) Christian missionary in Ireland. Patrick was born on a small estate (villula) owned by his father Calpornius, who held both civic and church offices in the nearby town of Bannavem Taberniae (Thomas 1981, 310-13). Patrick was kidnapped from the estate at the age of sixteen and taken to Ireland where he was sold into slavery. There, desolate and alone, he turned to Christ and experienced a very powerful conversion. Six years later he escaped to Britain and underwent ecclesiastical training to become a priest, later returning to Ireland as bishop with a missinary zeal to convert his former captors.

Patrick left at least two writings which, in unpolished Latin and unsophisticated prose, reveal something of both his character and of contemporary Irish and British society. The first is a scathing letter addressed to the soldiers of a British warlord named Coroticus, who was responsible for kidnapping and murdering many of Patrick's new Irish converts (Thompson 1986). The Letter to Coroticus provides personal information about both Patrick and the Briton Coroticus, who Patrick describes as acting "like a tyrant" (Epistola 6). Patrick's second work, written towards the end of his life, is a spiritual autobiography or Confession in the form made famous by Augustine of Hippo (though Patrick's sincere personal statement is hardly a masterpiece of theological speculation). Here, Patrick describes the Britain of his youth and the British Church which sponsored--but is now having doubts about--Patrick's Irish mission.

While Britain appears only occasionally in Patrick's writings, it features prominently in those of Gildas who lived in the early sixth century. Gildas, also a Briton and a member of the clergy, penned a substantial work called The Ruin of Britain and is thought to have been responsible for a monastic Penitential (possibly the first of its kind in the western Church) which bears his name as well as Fragments of some lost letters discussing church matters. The Ruin of Britain begins with an "historical" prologue which narrates the foreign and domestic wars plaguing Britain since the departure of the Romans, then turns into an impassioned sermon (a jeremiad in the true sense of the word) denouncing the crimes of current British rulers and the sins of the British clergy. Though his language and imagery is frequently that of the Old Testament (Wright 1984), Gildas occasionally drops clues about Britain's political and ecclesiastical arrangements, and about his own classical Latin education (Lapidge 1984).

Gildas claims that the Scots and especially the Picts were causing such a serious threat to Britain that a "council" (consilium) was convened and its members, together with the "proud tyrant" (superbus tyrannus), elected to hire Saxon merceneries to defend the eastern portion of the island. (The technical military language employed by Gildas likely means that the Britons were following the Late Roman practice of hiring barbarian foederati). The Saxons turned against their employers, defeating British forces and plundering British towns until a Romano-Britain named Ambrosius Aurelianus assumed military leadership. Thereafter victories were traded by both sides until the siege of Badon Hill, traditionally dated c. AD 500, which took place in the year of Gildas's birth. The Britons emerged from Badon victorious, but soon fell into civil war and corruption. Gildas attacks five contemporary rulers (variously termed "kings" and "tyrants")--Constantine of Dumnonia, Aurelius Caninus, Vortipor of the Demetae, Cuneglasus, and Maglocunus--for swearing false oaths, acting as corrupt judges, and entertaining flatterers and murderers at their courts (not to mention their own sins ranging from adultery to regicide). The British secular clergy are little better--greed, gluttony, and simony weigh them down--while only the monastics (probably few in Gildas's day) are worthy of praise. Interspersed among these attacks, and in Gildas's other writings, are more mundane details about diet, dress, and entertainment in sixth-century Britain.

Gildas and Patrick are our two most important sources of information for sub-Roman Britain. There are a few other sources which, because they were written down later for the most part, must be used cautiously as evidence for the fifth and sixth centuries. A collection of 158 charters recorded in the Book of Llan Dv, dealing mostly with land grants in southeast Wales, has been used (W. Davies 1978) to show the transition of Late Roman to Early Medieval estates (some of the charters appear to date originally to the sixth century). The earliest British vernacular bardic poetry, such as those verses attributed to Aneirin and Taliesin, is sometimes used to reconstruct "heroic" society from the late sixth century on. Bede, writing in the eighth century but drawing on much earlier material (including Gildas), gives us a few additional clues about the sub-Roman period (including the name of the "proud tyrant"--Vortigern). Another English source, the Anglo-Saxon Chronicle composed in Wessex beginning in the ninth century, records Saxon victories over the British (and the names of both British and Saxon leaders) which may derrive from earlier oral accounts. Two collections of British historical material from the ninth century, the History of the Britons (attributed to the Welsh monk Nennius) and the Welsh Annals, may likewise draw on some contemporary records from the late sixth century on. Finally, there is a vast body of Welsh genealogies and saints' lives, the earliest of which is probably the Cornish Life of St. Samson written in the early seventh century.


The literary evidence sometimes provides names for persons and places in sub-Roman Britain, but more often we must deal with the clues present in both the political (reges, tyranni, cives) and ecclesiastical (episcopi, presbyteri, monachi) terminolgy employed by the writers (Snyder forthcoming). These clues are also present in the epigraphic evidence for Roman and sub-Roman Britain. The vast corpus of Roman inscriptions from Britain--mostly in stone but also occasionally on metal plaques, pottery, and writing tablets--can tell us something of both the public and private life of Britons in the twilight years of the Roman occupation (Collingwood and Wright 1965). While much of this evidence comes from the military (i.e. soldiers' tombstones), it tells us something of the religions prevalent in Roman Britain, the ethnic origins of the soldiery, and even what foodstuffs (such as the ever-present cervisa, a Celtic beer) were shipped to the frontier.

Christianity of course became a significant presence in all of the western provinces by the end of the fourth century. Some Christianized Britons, perhaps inspired by their Gallic counterparts, began commemorating their dead in the fifth century through inscribed memorial stones. Most of the surviving examples come from Wales (Nash-Williams 1950) and the Southwest (Okasha 1993; Thomas 1994), with a few instances in southern towns and in Scotland. These inscriptions are usually in Latin and are occasionally accompanied by the short-lived Irish alphabet known as ogam (McManus 1991). This epigraphic evidence from the fifth and sixth centuries has revealed a multitude of personal names (of the famous and of the obscure), various terms for rulers (rex, protector, magistrate) and clergy, and at least one profession (a medicus). While dating these inscriptions can be difficult, much more can be made of this evidence for Early Medieval British society than has heretofore been attempted.


The material culture of the sub-Roman Britons is increasingly being revealed through the medium of archaeology. At first used merely to supplement the written sources, archaeological evidence is now often taking center stage in Britain. The maturation of scientific archaeology has even lead some true-believers to ignore the problematic written sources and treat the fifth and sixth centuries as a "prehistoric" era, which has freed them to construct new socio-political models devoid of names and dates (Arnold 1984). More common, however, is the archaeological survey which attempts to answer the questions posed by the written sources and come up with historical or at least quasi-historical explanations for the sub-Roman period (Esmonde Cleary 1989; Dark 1993).

While Roman urban archaeology has long been pursued enthusiastically in Britain, Dark Age archaeology has been just that, dark. But the last fifty years of excavations has shed new light on both the sub-Roman phases of many Roman towns and on rural fortified settlements--"hillforts"--and monasteries. If not spectacular in their artifactual assemblage, these excavations have revealed impressive structures and the insight that sub-Roman Britain was anything but isolated and culturally impoverished.

The first, and perhaps most important, discovery came in the 1930s with Ralegh Radford's excavations at Tintagel, Cornwall (Radford 1939). Beyond the inner ward of Tintagel's Norman castle, Radford uncovered the remains of several small rectangular structures made of stone and slate as well as thousands of sherds of imported Mediterranean pottery, then termed "Tintagel ware." Much of the pottery came from wine and oil containers datable to the fifth to seventh centuries, leading Radford to interpret this settlement as a Celtic monastery. Subsequent excavations at Tintagel have revealed more structures and pottery, though alternative interpretations--a princely stronghold, an active trading post--have recently overshadowed the monastic model (Thomas 1993).

Tintagel's impressive commercial activity showed that Britain was not isolated in the sub- Roman period. On the contrary, Britain seems to have opened up new trade relations with Gaul, North Africa, and the eastern Mediterranean in which British commodities (most likely tin and slaves) were exchanged for luxury goods. "Tintagel ware" soon began to be identified from pottery finds at other sites, and new excavations turned up more examples along with imported glass and jewelry. The defended hilltop settlement at Dinas Powys, near Cardiff in Glamorganshire, yielded an abundance of these imports, even though its occupation area is quite small compared to Tintagel and the sub-Roman hillforts (Alcock 1963). Leslie Alcock's excavation's at Dinas Powys in the 1950s also revealed evidence of a thriving native metalworking industry, perhaps controled by local rulers who exchanged goods for military services (Alcock 1987).

Alcock also directed the much-publicized excavations at South Cadbury hillfort in the late 1960s (Alcock 1972; Alcock et al., 1995). Claimed by Tudor antiquarians to be King Arthur's "Camelot," this massive hillfort rises 500 feet above the Somerset plains, its steep sides defended by five massive ramparts enclosing a plateau of about 18 acres. South Cadbury revealed a long sequence of activity extending from the Neolithic to Late Saxon periods. Extensive fortifications--including stone walls with timber fighting platforms and a sophisticated timber gateway--were made in the fifth century AD, when a large (feasting?) hall dominated the plateau. Once again, excavators found an abundance of imported pottery along with Late Roman coins and Saxon brooches. While the much hoped for clues to the existence of Arthur were not found at South Cadbury, Alcock did reveal a major sub-Roman settlement that was perhaps the residence of a major British ruler.

Native hillforts were not the only form of defense for the sub-Roman Britons. Recent excavation along Hadrian's Wall has revealed much fifth- and sixth-century evidence, including new timber structures built at the Wall forts (Dark 1992). At Birdoswald, for example, timber "halls" replaced two Roman granaries, while at South Shields a new gateway was constructed. Once thought to have been abandoned after 410, it now appears that Hadrian's Wall continued to be used to defend local civilian populations in the sub-Roman period. This may have been the case as well for the Saxon Shore forts in the southeast. Both Portchester and Richborough show signs of lingering occupation, while the walls of the latter may have sheltered a Christian church.

The strongest evidence--literary, epigraphic, and archaeological--for Christian activity in sub-Roman Britain comes from Whithorn in southwestern Scotland. Claimed by Bede to be the site of St. Ninian's fifth-century monastery, Candida Casa, the area has yielded several Early Christian memorial stones. Peter Hill's excavations in the 1980s revealed at least two phases of Early Christian activity at Whithorn before it was taken by the Vikings (Hill 1997). Fifth- and sixth-century features of the site include small rectangular wattle buildings (one structure had lime-wash residue, giving credence to Bede's "Shining House" description of Ninian's monastery), a circular "oratory," a garden, remains of a mouldboard plough, broken "wine glasses," and yet more imported pottery. Hill sees good reason to believe that the sub-Roman settlement was indeed a monastery, with a surrounding Christian community large enough to perhaps warrant the provision of a bishop such as Ninian (from nearby Carlisle?).

Fourth-century ecclesiastical records do provide us with evidence for British bishops associated with towns that were provincial capitals, which means London, Lincoln, York, and possibly Cirencester and Carlisle. Most Roman towns in Britain were given major defensive circuits by the late fourth century, making their survival into the fifth century likely (Snyder 1996). Some historians and archaeologists believe that urban life--if not the towns themselves--was already disappearing by the early fourth century, and thus sub-Roman Britain must have been completely rural. Other scholars have seen signs of continuity between many Late Roman towns and their medieval successors. Urban continuity has been argued for Bath, Canterbury, Chester, Chichester, Cirencester, Exeter, Gloucester, Lincoln, London, Winchester, Worcester, and York. At Verulamium (St. Albans), where the medieval town grew up around the Saxon abbey outside of the Roman walls, archaeologists found several fifth-century structures and a newly-laid waterpipe indicating that a nearby Roman aqueduct was still providing for the town's sub-Roman inhabitants. At Silchester, which did not become a medieval town, excavations revealed that economic activity at the forum continued into the fifth century (dated by coins and imported pottery and glass), while jewelry and an ogam inscribed stone hint to sixth- century contacts with Irish settlers.

The most dynamic urban activity occured in the city of Wroxeter. Philip Barker's meticulous excavations of the baths basilica site revealed the constant repair and reconstruction of a Roman masonry structure into the early fifth century (Barker 1990). At that point, a large complex of timber buildings was constructed on the site and lasted until the late sixth century when they were carefully dismantled. Described by the excavator as "the last classically inspired buildings in Britain" until the eighteenth century, this complex included a two-storied winged house--perhaps with towers, a verandah, and a central portico--smaller auxilliary buildings (one of stone), and a strip of covered shops or possibly stables. More a villa than a public building, it was perhaps the residence of "tyrant" like Vortigern who had the resources to build himself "a kind of country mansion in the middle of the city" with stables and houses for his retainers (Webster 1975, 117).


Sub-Roman Wroxeter and other archaeological discoveries are helping dispel the myth of the Dark Ages in Britain. While the literary evidence for these years may be sparse, the more we learn about writers like Patrick and Gildas the more we see that they are connected to a literary tradition stretching across Roman Europe and the Mediterranean. While Latin letters and Christian bishops provide a continuity between sub-Roman Britain and its predecessor, "Celtic" style monasticism and art, vernacular bardic poetry, and dynastic tyrant/kings look forward to its distinctly medieval future. With or without Arthur, fifth- and sixth-century Britain developed a more vibrant character than its label "sub-Roman" would imply.


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Christopher Snyder is Chair of the Department of History and Politics at Marymount University in Arlington, Virginia.

Sub-Roman Britain, an Introduction is Copyright 1997 and 2003, Chris Snyder. This file may be copied on the condition that the entire contents,including the header and this copyright notice, remain intact. All rights reserved. Used with permission.

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