Rural landscape and settlement in the Dinas Powys environs: high-resolution analysis of a Roman and medieval pollen sequence at Nant yr Argae in the eastern Vale of Glamorgan
Keywords:
medieval, Nant yr Argae, Dinas Powys, Vale of Glamorgan, Wales, pollen, landscapeAbstract
This article presents the analysis of a well-preserved Roman and medieval pollen core from the Vale of Glamorgan – the first such analysis from a non-coastal lowland context in south Wales. The sampling site’s environs include the important early medieval promontory fort known as Dinas Powys. Between the mid-third and mid-seventh centuries AD, the pollen record shows considerable fluctuations both before and after the end of Roman administration. The strong pastoral signature seen in the pollen record for the sixth and seventh centuries corresponds with the floruit of Dinas Powys, supporting the view that its wealth was grounded in a local agricultural base. From the eighth and ninth centuries onwards, the overall picture is one of broad continuity. It appears that changes in landownership and tenure were associated with a general continuity of agricultural practice.
References
Alcock, L. 1963. Dinas Powys: An Iron Age, Dark Age and Early Medieval Settlement in Glamorgan. Cardiff: University of Wales Press.
Andersen, S.T. 1979. Identification of wild grass and cereal pollen. Danmarks Geologiske Undersøgelse, Årbog 1978: 66–92.
Blaauw, M. and Christen, J.A. 2011. Flexible paleoclimate age-depth models using an autoregressive gamma process. Bayesian analysis 6.3: 457–474.
Bronk Ramsey, C. 2009. Bayesian analysis of radiocarbon dates. Radiocarbon 51: 337–360.
Campbell, E. 1991. Imported goods in the early medieval Celtic west: with special reference to Dinas Powys. Unpublished PhD thesis, Cardiff University.
Campbell, E. 2007. Continental and Mediterranean Imports to Atlantic Britain and Ireland, AD 400–800. CBA Research Report 157. York: Council for British Archaeology.
Campbell, E., Seaman A., Lane, A. and Noble, G. 2023. A new chronology for the Welsh hillfort of Dinas Powys. Antiquity 97.396: 1548–1563.
Charles-Edwards, T. 2013. Wales and the Britons 350–1064. Oxford: Oxford University Press.
Comeau, R 2020. Land, People and Power in Early Medieval Wales: The Cantref of Cemais in Comparative Perspective. BAR British Series 659. Oxford: BAR Publishing.
Comeau, R. 2024. Agricultural Activity. In D. Gilbert, R. Morgan-James and S. Sinnott (eds), A Journey Through 6000 Years of History: archaeological investigations along the A4226 Five Mile Lane Improvements Scheme. Red River Archaeological Monograph 1. Cardiff: Red River Archaeology Group, 234–236.
Comeau, R. forthcoming. Corn-drying kilns in Wales: an update and insights. Archaeology in Wales.
Comeau, R., Seaman A. and Bloxam, A. 2023. Plague, Climate and Faith in Early Medieval Western Britain: investigating narratives of change. Medieval Archaeology 67.1: 1–28.
Crouch, D. 1985. The Slow Death of Kingship in Glamorgan. Morgannwg 26: 20–41.
Dark, P. 2022. Pollen-analytical perspectives on the end of Roman Britain. Environmental Archaeology [advance online]: 1–15. https://doi.org/10.1080/14614103.2022.2083926 (Accessed September 2025).
Davies, M. 1954–1955. Field Patterns in the Vale of Glamorgan. Transactions of the Cardiff Naturalists’ Society 84: 5–14.
Davies, M. 1956. Rhosili Open Field and Related South Wales Field Patterns. The Agricultural History Review 4.2: 80–96.
Davies, R.R. 1987. Conquest, Coexistence and Change – Wales: 1063–1415. Oxford: Oxford University Press.
Davies, T. 2015. Early Medieval Llyn Tegid: An Environmental Landscape Study. Unpublished PhD Thesis, University of Sheffield.
Davies, T. 2019. Culture, Climate, Coulter and Conflict: Pollen Studies from Early Medieval Wales. In R. Comeau and A. Seaman (eds), Living off the Land. Agriculture in Wales c. 400–1600 AD. Oxford: Windgather Press, 175–198.
Davies, T. 2022a. War, peace and pollen: examining the landscape of later medieval Wales. Medieval Settlement Research 37: 22–39.
Davies, T. 2022b. Brecon Beacons Palaeoenvironmental Assessment. Unpublished report for Brecon Beacons National Park Authority.
Davies, T., Seaman, A., and Davis, O. 2015. The Eastern Vale of Glamorgan Palaeoenvironmental Resource Assessment Project: Summary Report. Archaeology in Wales 54: 164–167.
Davies, T., Seaman, A., and Rippon, S. forthcoming. High Resolution Analysis of Roman and Early Medieval Pollen Cores from Gwent is Coed.
Davies, W. 1978. An Early Welsh Microcosm: studies in the Llandaff Charters. London: Royal Historical Society.
Davies, W. 1979. The Llandaff Chaters. Cardiff: University of Wales Press.
Davies, W. 1982. Wales in the Early Middle Ages. Leicester: Leicester University Press.
Edwards, N. 2023. Life in Early Medieval Wales. Oxford: Oxford University Press.
Evans, E. 2018. Romano-British Settlement in South-East Wales. Internet Archaeology 48. https://doi.org/10.11141/ia.48.8 (Accessed September 2025).
Evans, E., Dowdell, G. and Thomas, H.J. 1985. A Third-century Maritime Establishment at Cold Knap, Barry, South Glamorgan. Britanni 16: 57–125.
Faegri, K. and Iversen, J. 1989. Textbook of Pollen Analysis. 4th edition. Chichester: John Wiley & Sons.
Forster, E. and Charles, M. 2022. Agricultural land use in central, east and south-east England: arable or pasture? In M. McKerracher and H. Hamerow, H. (eds), New Perspectives on the Medieval ‘Agricultural Revolution’: Crop, Stock and Furrow. Liverpool: Liverpool University Press, 61–85.
Forward, A. 2013. The Ceramic Evidence for Economic Life and Networks from 12th- to 1seventh-Century Settlement Sites in South Glamorgan. Unpublished PhD Thesis, Cardiff University.
Gilbert, D., Morgan-James R. and Sinnott S. 2024. A Journey Through 6000 Years of History: archaeological investigations along the A4226 Five Mile Lane Improvements Scheme. Red River Archaeological Monograph 1. Cardiff: Red River Archaeology Group.
Gilchrist, R. 1988. A reappraisal of Dinas Powys: local exchange and specialized livestock production in fifth- to seventh- century Wales. Medieval Archaeology 32: 50–62.
Gresham, A.C. 1965. Review of Dinas Powys. Antiquaries Journal 45: 127–128.
Hall, D. 2014. The Open Fields of England. Oxford: Oxford University Press.
Hansen, I. and Wickham, C. (eds) 2000. The Long Eighth Century: production, distribution and demand. Leiden: Brill.
Holbrook, N. and Thomas, A. 2005. An early- medieval monastic cemetery at Llandough, Glamorgan: excavations in 1994. Medieval Archaeology 49: 1–92.
Hopewell, D. and Edwards, N. 2018. Early medieval settlement and field systems at Rhuddgaer, Anglesey. Archaeologia Cambrensis 166: 213–247.
Jarrett, M. and Wrathmell, S. 1981. Whitton: an Iron Age and Roman farmstead in South Glamorgan. Cardiff: University of Wales Press.
Knight, J. 2005. From villa to monastery: Llandough in context. Medieval Archaeology 49: 93–108.
Knight, J. 2013. South Wales From the Romans to the Normans: Christianity, Literacy & Lordship. Stroud: Amberley Press.
Leighton, D.K. 2012. The Western Brecon Beacons: the archaeology of Mynydd Du and Fforest Fawr. Aberystwyth: Royal Commission on the Ancient and Historical Monuments in Wales.
Manning, W. 1975. Roman military timber granaries in Britain. Saalburg Jahrb 32: 105–129.
Mattingly, D. 2006. An Imperial Possession: Britain in the Roman Empire. London: Penguin.
McCormick, F. 2008. The Decline of the Cow: Agricultural and Settlement Change in Early Medieval Ireland. Peritia 20: 210–225.
Moore, P., Webb, J. and Collinson, M. 1991. Pollen Analysis. Oxford: Blackwell.
O’Brien Butler, C. and Holt, H. forthcoming. Unlocking Llandough: chronology kinship and funerary commemoration.
RCAHMW. 1983. An Inventory of the Ancient Monuments in Glamorgan:, vol.3 Medieval Secular Monuments, part 2: non-defensive. London: HMSO.
RCAHMW. 1991. An Inventory of the Ancient Monuments in Glamorgan Vol. 3 Medieval Secular Monuments. Part 1a, The Early Castles, from the Norman Conquest to 1217. London: HMSO.
Redknap, M. 2022. Early medieval metalwork from south-east Wales: patterns and potential. Archaeologia Cambrensis 171: 73–114.
Reimer, P.J., Austin, W.E.N., Bard, E. et al. 2020. The IntCal20 Northern Hemisphere radiocarbon age calibration curve (0–55 CAL kBP). Radiocarbon 62.4: 725–757.
Rippon, S. 2010. Landscape change in the ‘Long Eighth Century’ in southern England. In N.J. Higham and M.J. Ryan (eds), The Landscape of Anglo-Saxon England. Woodbridge: Boydell Press, 39–64.
Rippon, S., Smart, C. and Pears, B. 2015. The Fields of Britannia: continuity and change in the late Roman and early medieval landscape. Oxford: Oxford University Press.
Robinson, D. M. 1988. Biglis, Caldicot & Llandough: three Iron Age and Romano- British sites in South- east Wales, excavations 1977–1979. BAR British Series 188. Oxford: British Archaeological Reports.
Seaman, A. 2011. Towards a predictive model of early medieval settlement location: a case study from the Vale of Glamorgan. Medieval Settlement Research 25: 12–22.
Seaman, A. 2013. Dinas Powys in context: settlement and society in post-Roman Wales. Studia Celtica 47: 1–23.
Seaman, A. 2018. Landscape, Economy and Society in Late and Post Roman Wales. In N. Christie and P. Diarte Blasco (eds), Interpreting Transformations of Landscapes and People in Late Antiquity. Oxford: Oxbow, 123–136.
Seaman, A. 2019. Landscape, settlement and agriculture in early medieval Brycheiniog: the evidence from the Llandaff Charters. In R. Comeau and A. Seaman (eds), Living off the Land: Agriculture in Wales c. 400–1600 AD. Oxford: Windgather Press, 153–173.
Seaman, A. in press. Rulers and ‘Royal Courts’ in Late Antique Wales and Southwest England. In L. Lavan and P. Crawford (eds), Imperial Archaeologies. Leiden: Brill.
Sims-Williams, P. 2019. The Book of Llandaff as a Historical Source. Woodbridge: Boydell Press.
Smith, A., Allen, M., Brindle, T. and Fulford, M. 2016. The Rural Settlement of Roman Britain. London: Society for the Promotion of Roman Studies.
Stevens, M. F. 2019. The Economy of Medieval Wales, 1067–1536. Cardiff: University of Wales Press.
Swain, A.M. 1978. Environmental Changes during the Past 2000 Years in North-Central Wisconsin: Analysis of Pollen, Charcoal, and Seeds from Varved Lake Sediments. Quaternary Research 10: 55–68.
Wrathmell, S. and Vyner, B. 1978. The deserted village of Wrinstone, South Glamorgan. Transactions of the Cardiff Naturalists Society 98: 18–29.