War, peace and pollen: examining the landscape of later medieval Wales


  • Tudur Davies


This paper presents the second part of a review of palynological studies covering the medieval period in Wales. The first part, covering the period c. AD 410–1050 (Davies 2019), has been published in Comeau and Seaman’s edited review of medieval agriculture in Wales (2019); the current paper examines the period c. AD 1050–1500. Although some scholars have previously examined palynological trends in Wales through the earlier medieval period (e.g. Dark 2000; Rippon et al. 2013; 2015; Davies 2015; 2019; Rippon 2019), the later medieval period has been relatively neglected in regional reviews of palaeoenvironmental data. The greatest contribution has been provided by Astrid Caseldine (cf. Edwards 1997; Roberts 2006), who has demonstrated the potential of such research with her work on cores from Ynys Etws (Caseldine 2006), Llyn Morwynion (Caseldine et al. 2001) and several other sites. The current review builds on Caseldine’s work, providing a comprehensive examination of published pollen studies and considering the potential cultural influences on Wales’ pollen record.


Andersen, S. T. 1979. Identification of wild grass and cereal pollen. Danmarks Geologiske Undersøgelse, Årbog 1978, 69–92.

Aposolides, A., Broadberry, S., Campbell, B., Overton, M. and van Leeuwen, B. 2008. English agricultural output and labour productivity, 1250–1850: some preliminary estimates. Unpublished working paper. Available at https://ore.exeter.ac.uk/repository/handle/10871/13985 (accessed 6/7/2020).

Austin. D. 2019. T Fukktur Sgwâr: mapping the history of local land in a Welsh heartland. In R. Comeau and A. Seaman (eds), Living off the land: agriculture in Wales c. 400 to 1600 AD. Oxford: Windgather Press, 112–129.

Behre, K. 1981 The interpretation of anthropogenic indicators in pollen diagrams. Pollen et Spores 23.2: 225–245.

Bennett, K. D. 1994 Annotated catalogue of pollen and pteridophyte spore types of the British Isles. Unpublished Catalogue, University of Cambridge.

Blackford, J. 1990. Blanket mires and climatic change; a palaeoecological study based on peat humification and microfossil analyses. Unpublished PhD thesis, University of Keele.

Blaauw, M. 2010. Methods and code for ‘classical’ age-modelling of radiocarbon sequences. Quaternary Geochronology 5: 512–18.

Bloemendal, J. 1982. The quantification of rates of total sediment influx to Llyn Goddionduon, Gwynedd. Unpublished PhD thesis, University of Liverpool.

Botterill, E.M. 1988. A palaeoecological study of Cors Gyfelog and Tre'r Gof: Lowland Mires in North West Wales. Unpublished PhD thesis, University of Keele.

Buckley, S. 2000. Palaeoecological Investigations of Blanket Mires in Upland Mid-Wales. Unpublished PhD thesis, University of Wales Lampeter.

Burrow, S. and Williams, S. 2010. Wales and Borders radiocarbon database. Available by request from: National Museums and Galleries of Wales (accessed on 22/03/2013).

Büntgen, U., Tegel, W., Nicolussi, K., McCormick, M., Frank, D., Trouet, V., Kaplan, J.O., Herzig, F., Heussner, K.U., Wanner, H. and Luterbacher, J. 2011. 2500 years of European climate variability and human susceptibility. Science 331.6017: 578–582.

Caple, C. 2017. Excavations at Dryslwyn Castle 1980–1995. Milton Park: Routledge.

Carr, A. 1995. Medieval Wales. British History in Perspective. Macmillan Press, London.

Caseldine, A. 1990. Environmental Archaeology in Wales. Lampeter: The Print Unit, St David’s University College, University of Wales.

Caseldine, A. 2006. The environment and deserted rural settlements in Wales: potential and possibilities for palaeoenvironmental studies. In K. Roberts (ed.), Lost Farmsteads deserted rural settlements in Wales. CBA Research Report 148, York: Council for British Archaeology.

Caseldine, A. 2013. Pollen analysis at Craig y Dullfan and Banc Wernwgan and other recent palaeoenvironmental studies in Wales. Archaeologia Cambrensis 162: 275–307.

Caseldine, A.E., Griffiths, C.J., Roberts, J.G., Smith, G. and Williams, J.L. 2017. Land use and environmental history of Waun Llanfair, an upland landscape above Penmaenmawr, North Wales. Archaeologia Cambrensis 166: 89–140.

Caseldine, A., Smith, G. and Griffiths, C. 2001. Vegetation history and upland settlement at Llyn Morwynion, Ffestiniog, Meirionnydd. Archaeology in Wales 41: 21–33.

CBA 2000 Archaeological Site Index to Radiocarbon Dates from Great Britain and Ireland. Council for British Archaeology (updated 2012). Available at https://archaeologydataservice.ac.uk/archives/view/c14_cba/ (accessed on 12/06/2021).

Chambers, F.M. 1982. Two Radiocarbon-Dated Pollen Diagrams from High-Altitude Blanket Peats in South Wales. Journal of Ecology 70.2: 445–459.

Chambers, F.M. 1983. The Palaeoecological setting of Cefn Gwernffrwd – a prehistoric complex in mid-Wales. Proceedings of the Prehistoric Society 49: 303–316.

Chambers, F.M. and Price, S.M. 1988. The Environmental Setting of Erw-wen and Moel y Gerddi: Prehistoric Enclosures in Upland Ardudwy, North Wales. Proceedings of the Prehistoric Society 54: 93–100.

Chambers, F.M., Mauquoy, D., Gent, A., Pearson, F., Daniell, J.R. and Jones, P.S., 2007. Palaeoecology of degraded blanket mire in South Wales: data to inform conservation management. Biological conservation 137.2: 197–209.

Clapham, A., Tutin, T. and Moore, D. 1987. Flora of the British Isles. 3rd edition. Cambridge: Cambridge University Press.

Comeau, R., 2019. The practice of ‘in rodwallis’: medieval Welsh agriculture in north Pembrokeshire. In R. Comeau and A. Seaman (eds). Living off the land: agriculture in Wales c. 400 to 1600 AD. Oxford: Windgather Press, 130–152.

Comeau, R. and Burrow, S. 2021. Corn-drying kilns in Wales: a review of the evidence. Archaeologia Cambrensis 170: 111–149.

Comeau, R. and Seaman, A. (eds) 2019. Living off the land: agriculture in Wales c. 400 to 1600 AD. Oxford: Windgather Press.

Comeau, R. and Silvester, R.J. 2021. Transhumant settlement in medieval Wales: the hafod. In P. Dixon, M. Gardiner and C. Theune (eds) Seasonal Settlement in the Medieval and Early Modern Countryside, Ruralia 13. Leiden: Sidestone Press, 113–123.

Cowley, F.G. 1977. The monastic order in South Wales, 1066–1349. Cardiff: University of Wales Press.

Crampton, C. 1966. Pollen Analysis Report. In D. Hague and C. Warhurst, Excavations at Sycharth Castle, Denbighshire, 1962–63. Archaeologia Cambrensis 115: 108–127.

Crew, P., and Mighall, T. 2013. The fuel supply and woodland management at a 14th century bloomery in Snowdonia: a multi-disciplinary approach. In J. Humphris and T. Rehren (eds) 2013, The World of Iron, Proceedings of a Conference at the Natural History Museum 2009. London: Archetype, 473–482.

Dark, P. 2000. The environment of Britain in the first millennium AD. London: Duckworth.

Davidson, A., Davies, W., and Gray, M. 2017. A Research Framework for the Archaeology of Wales: Medieval. Available at https://archaeoleg.org.uk/pdf/review2017/medreview2017.pdf

Davies, J. 1990. A History of Wales. St Ives: Penguin.

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 form early medieval Wales. In R. Comeau and A. Seaman (eds). Living off the land: agriculture in Wales c. 400 to 1600 AD. Oxford: Windgather Press, 174–198.

Davies, W. 2002. ‘Adding insult to injury’. In W. Davies and P. Fouracre (eds). Property and Power in the Early Middle Ages. Cambridge: Cambridge University Press, 137–164.

Dixon, P. 2018. What do we really know about transhumance in medieval Scotland?. In E. Costello and E. Svensson (eds), Historical archaeologies of transhumance across Europe, Milton Park: Routledge, 59–73.

Dugmore, A.J., Cook, G.T., Shore, J.S., Newton, A.J., Edwards, K.J. and Larsen, G., 1995. Radiocarbon dating tephra layers in Britain and Iceland. Radiocarbon 37.2: 379–388.

Edwards, M.E. 1986. Disturbance Histories of Four Snowdonian Woodlands and Their Relation to Atlantic Bryophyte Distributions. Biological Conservation 37: 301–320.

Elner, J.K., Happey-Wood, C.M. and Wood, D.G.E. 1980. The History of Two Linked but Contrasting Lakes in North Wales from a Study of Pollen, Diatoms and Chemistry in Sediment Cores. The Journal of Ecology 68: 95–121.

Fyfe, R., Brown, A. and Rippon, S. 2003. Mid- to late-Holocene vegetation history of Greater Exmoor, UK: estimating the spatial extent of human-induced vegetation change. Vegetation History and Archaeobotany 12.4: 215–232.

Fyfe, R.M., Brown, A.G. and Rippon, S.J. 2004. Characterising the late prehistoric,‘Romano-British’and medieval landscape, and dating the emergence of a regionally distinct agricultural system in South West Britain. Journal of Archaeological Science 31.12: 1699–1714.

Given, J. 1989. The economic consequences of the English conquest of Gwynedd. Speculum 64.1: 11–45.

Grant, F.R. 2007. Analysis of a Peat Core from Mynydd Hiraethog (Denbigh Moors) North Wales. Unpublished Report for Royal Commission on the Ancient and Historical Monument of Wales.

Grant, F. 2009. Analysis of a peat core from the Clwydian Hills, North Wales. Unpublished report produced for Royal Commission on the Ancient and Historical Monuments of Wales, Report No. 209.

Gregory, R. Rutherford, M. and Druce, D. 2020. Archaeological and palaeoenvironmental investigation along the BurboBank extension offshore wind farm, onshore export cable, Denbighshire, North Wales SJ 036 825 to SJ 021 734. Archaeology in Wales 57–58: 3–35.

Grime, J.P., Hodgson, J.G., and Hunt, R. 2007. Comparative Plant Ecology: a functional approach to common British species. 2nd edition. Colvend: Castlepoint Press.

Heyworth, A., Kidson, C. and Wilks, P. 1985. Late-Glacial and Holocene Sediments at Clarach Bay, Near Aberystwyth. Journal of Ecology 73: 459–480.

Holden, T., Morgan, G., Hillman, G. and Moore, P. 1994. Botanical remains. In H. Quinnell, M. Blockley and P. Berridge (eds) Excavations at Rhuddlan, Clwyd 1969-1973. Mesolithic to medieval. CBA Research Report 95. York: Council for British Archaeology, 160–63.

Hooke, D. 2019. Resource management of seasonal pasture: some English/Welsh comparisons. In R. Comeau and A. Seaman (eds), Living off the land: agriculture in Wales c. 400 to 1600 AD. Oxford: Windgather Press, 37–56.

Hopewell, D. and Edwards, N. (2017). Early Medieval Settlement and Field Systems at Rhuddgaer, Anglesey. Archaeologia Cambrensis 166: 213–242.

Huggins, T.S. 2008. The Late-Pleistocene, Lateglacial and Holocene palaeoecological records of hydroseral development in rich-fen plant communities, Anglesey, North Wales. Unpublished PhD thesis, University of Birmingham.

Hughes, P.D.M. and Dumayne-Peaty, L. 2002. Testing theories of mire development using multiple successions at Crymlyn Bog, West Glamorgan, South Wales, UK. Journal of Ecology 90: 456–471.

Hughes, P.D.M., Lomas-Clarke, S.H., Schulz, J. and Jones, P. 2007. The declining quality of late-Holocene ombrotrophic communities and the loss of Sphagnum austinii (Sull. ex Aust.) on raised bogs in Wales. The Holocene 17.5: 613–625.

Jaakkola, T., Tolonen, K., Huttunen, P. and Leskinen, S. 1983. The use of fallout 137 Cs and 239,240 Pu for dating of lake sediments. Hydrobiologia 103: 15–19.

Jenkins, D. (ed.) 1986. Hywel Dda, The Law. Llandysul: Gomer Press.

Jones, C.S. 2011. Holocene stand-scale forest dynamics of the British Isles. Unpublished PhD Thesis, University of Liverpool.

Jones, R., Chambers, F.M. and Benson-Evans, K. 1991. Heavy metals (Cu and Zn) in recent sediments of Llangorse Lake, Wales: non-ferrous smelting, Napoleon and the price of wheat—a palaeoecological study. Hydrobiologia 214.1: 149–154.

Kelly, R. 1998. The excavation of an enclosed hut group at Graeanog, Clynog, Gwynedd 1985, 1987, 1988. In P.J. Fasham, R.S. Kelly, M.A. Mason and R.B. White, The Graeanog Ridge, Evolution of a Farming Landscape and its Settlements in North-West Wales. Cambrian Archaeological Monographs 6. Cardiff: Cambrian Archaeological Association, 113–157.

Lamb, H. 1977. Climate: Present, Past and Future. Volume 2 – Climate History and the future. London: Methuen & Co Ltd.

Lamb, H. 1995. Climate, History and the modern world. Second edition. Milton Park: Routledge.

Land Utilisation Survey 1932–33. Llandrindod Wells. Land Utilisation Survey Maps of Britain, Sheet 79, 1 inch: 1 mile. London: London School of Economics.

Lascelles, D. 1995. Holocene environmental and pedogenic history of the Hiraethog Moors, Clwyd. Bangor: University of Wales.

Lewis, E.A. 1903. The development of industry and commerce in Wales during the middle ages. Transactions of the Royal Historical Society 17: 121–173.

Longley, D. 1997. The Royal Courts of the Welsh Princes in Gwynedd, AD 400–1283. In N. Edwards (ed.) Landscape and Settlement in Medieval Wales. Oxford: Oxbow, 41–69.

Mighall, T.M. and Chambers, F.M. 1995. Holocene vegetation history and human impact at Bryn y Castell, Snowdonia, North Wales. New Phytologist 130.2: 299–321.

Mighall, T., Timberlake, S. and Crew, P. 2010. Vegetation changes in former mining and metalworking areas of Wales and Ireland during prehistoric and medieval times. In P. Belford, M. Palmer and R. White (eds). Footprints of Industry. BAR British Series 523: 19–26.

Mighall, T.M., Timberlake, S. and Grattan, J. 2013. A palaeoecological assessment of the blanket peat surrounding the Source of the Severn, Plynlimon. Unpublished report for the Metal Links: Forging Communities Together InterReg IVA project.

Moore, P.D. and Chater, E.H., 1969. The changing vegetation of west-central Wales in the light of human history. The Journal of Ecology 57.2: 361–379.

Moore, P. 1971. Pollen analysis of a buried soil at Hen Domen. In P. Barker and J. Lawson 1971. A pre-Norman field-system at Hen Domen, Montgomery. Medieval Archaeology 15.1: 69–70.

Morriss, S.H.M. 2001. Recent human impact and land use change in Britain and Ireland: a pollen analytical and geochemical study. Unpublished PhD thesis, University of Southampton.

Parry, M., 1985. Upland settlement and climatic change: the medieval evidence. In D. Spratt and C. Burgess (eds) Upland settlement in Britain. BAR British Series 143: 35–49.

Price, M.D.R. and Moore, P.D. 1984. Pollen dispersion in the hills of Wales: a pollen shed hypothesis. Pollen et Spores 26: 127–136.

Reimer, P.J., Austin, W.E., Bard, E., Bayliss, A., Blackwell, P.G., Ramsey, C.B., Butzin, M., Cheng, H., Edwards, R.L., Friedrich, M. and Grootes, P.M., 2020. The IntCal20 Northern Hemisphere radiocarbon age calibration curve (0–55 cal kBP). Radiocarbon 62.4: 725–757.

Richards, M. 1954. The Laws of Hywel Dda (The Book of Blegywryd). Liverpool: Liverpool University Press.

Rippon, S. 1997. The Severn Estuary. Landscape Evolution and Wetland Reclamation. London: Leicester University Press.

Rippon, S. 2019. The Fields of Britannia: continuity and change within the early medieval landscape. In R. Comeau and A. Seaman (eds). Living off the land: agriculture in Wales c. 400 to 1600 AD. Oxford: Windgather Press, 15–37.

Rippon, S., Smart, C. and Pears, B. 2015. The fields of Britannia. Oxford, Oxford University Press.

Rippon, S., Smart, C., Pears, B. and Fleming, F. 2013 The Fields of Britannia: Continuity and Discontinuity in the Pays and Regions of Roman Britain. Landscapes 14.1: 33–53.

Roberts, K. (ed.) 2006. Lost Farmsteads deserted rural settlements in Wales. CBA Research Report 148, York: Council for British Archaeology.

Roberts, S. E. 2019. Living off the land in medieval Welsh law. In R. Comeau and A. Seaman (eds). Living off the land: agriculture in Wales c. 400 to 1600 AD. Oxford: Windgather Press, 78–92

Rose, N.L. and Appleby, P.G., 2005. Regional applications of lake sediment dating by spheroidal carbonaceous particle analysis I: United Kingdom. Journal of Paleolimnology 34.3: 349–361.

Rosen, D. 1998. Recent palaeoecology and industrial impact on the South Wales landscape. Unpublished PhD thesis, University of Wales, Swansea.

Seymour, W.P. 1985. The environmental history of the preseli region of south-west Wales over the past 12000 years. Unpublished PhD Thesis, University of Wales.

Silvester, R.J., 2000. Medieval upland cultivation on the Berwyns in north Wales. Landscape History 22.1: 47–60.

Silvester, R.J. 2006 Deserted rural settlements in central and north-east Wales. In K. Roberts (ed.), Lost Farmsteads deserted rural settlements in Wales. CBA Research Report 148. York: Council for British Archaeology, 13–39

Silvester, R.J. 2019. Medieval field systems in north Wales. R. Comeau and A. Seaman (eds). Living off the land: agriculture in Wales c. 400 to 1600 AD. Oxford: Windgather Press, 93–111.

Smith, A.G. and Cloutman, E.W. 1988. Reconstruction of Holocene vegetation history in three dimensions at Waun-Fignen-Felen, an upland site in South Wales. Philosophical Transactions of The Rooyal Society of London B 322.1209: 159–219.

Smith, J.B. 2014. Llywelyn ap Gruffudd: prince of Wales. Cardiff: University of Wales Press.

Soulsby, I. 1983. The Towns of Medieval Wales: A study of their history, archaeology and early topography. Southampton: Camelot Press.

Stace, C. 2010. New Flora of the British Isles. 3rd edition. Cambridge: Cambridge University Press.

Steane, J. 2014. The archaeology of medieval England and Wales. Milton Park: Routledge.

Stevens, M.F. 2019. The Economy of Medieval Wales, 1067–1536. Cardiff: University of Wales Press.

Sylvester, D. 1969. The rural landscape of the Welsh borderland: a study in historical geography. New York: MacMillan Publishing Company.

Thorpe, L. 1978. Gerald Cambrensis: The Journey through Wales and the Description of Wales. London: Penguin Books.

Turner, J. 1964. The Anthropogenic Factor in Vegetational History. I. Tregaron and Whixall Mosses. New Phytologist 63.1: 73–90.

Van der Veen, M., Hill, A. and Livarda, A. 2013. The archaeobotany of Medieval Britain (c AD 450–1500): identifying research priorities for the 21st century. Medieval Archaeology 57: 151–182.

Van Loon, H. and Rogers, J.C. 1978. The seesaw in winter temperatures between Greenland and northern Europe. Part I: General description. Monthly Weather Review 106.3: 296–310.

Wade-Evans, A.W. 1909. Welsh Medieval Law: Being a Text of the Laws of Howel the Good, Namely the British Museum Harleian Ms. 4353 of the 13th Century, with Translation, Introduction, Appendix, Glossary, Index, and a Map. Oxford: The Clarendon Press.

Walker, M.J.C. 1993. Holocene (Flandrian) vegetation change and human activity in the Carneddau area of upland mid-Wales. In F.M. Chambers (ed.). Climate Change and Human Impact on the Landscape. Studies in palaeoecology and environmental archaeology. London: Chapman and Hall, 169–183.

Walker, M.J.C., Lawler, M. and Locock, M. 1997. Woodland clearance in medieval Glamorgan: pollen evidence from Cefn Hirgoed. Archaeology in Wales 37: 21–26.

Walker, R. 1978. Diatom and pollen studies of a sediment profile from Melynllyn, a mountain tarn in Snowdonia, North Wales. New Phytologist 81.3: 791–804.

Ward, A. 1997. Transhumance and settlement on the Welsh uplands: A view from the Black Mountain. In N. Edwards (ed.), Landscape and Settlement in Medieval Wales. Oxford: Oxbow, 97–111.

Watkins, R., Scourse, J.D. and Allen, J.R., 2007. The Holocene vegetation history of the Arfon Platform, north Wales, UK. Boreas 36.2: 170–181.

Watson, E.J., Swindles, G.T., Lawson, I.T., Savov, I.P. and Wastegård, S. 2017. The presence of Holocene cryptotephra in Wales and southern England. Journal of Quaternary Science 32.4: 493–500.

Williams, D.H., 1990. Atlas of Cistercian lands in Wales. Cardiff: University of Wales Press.

Williams, S.W. 1889. The Cistercian Abbey of Strata Florida. London: Whiting & Co.

Williams-Jones, K. (ed.) 1976. The Meirioneth Lay Subsidy Roll. Cardiff: University of Wales Press.

Woodbridge, J., Fyfe, R., Law, B. and Haworth-Jones, A. 2012. A spatial approach to upland vegetation change and human impact: the Aber Valley, Snowdonia. Environmental Archaeology 17.1: 80–9.



How to Cite

Davies, T. (2022). War, peace and pollen: examining the landscape of later medieval Wales. Medieval Settlement Research, 37, 22–39. Retrieved from https://archaeopresspublishing.com/ojs/index.php/msr/article/view/1865