Llantwit Major: excavation overview

This page will contain a summary of the excavation results. For now, it contains a copy of the summary after the 2023 season, but will be updated to include the results of the 2024 season very soon.

Provisional results from the 2023 dig

The results of the 2023 excavations are not yet fully compiled (switching from an August/September dig to a May/June timing meant a rather short winter for the post-excavation studies to be completed!), but a tentative story for the development of the site is emerging (although it might easily be altered by the results of the 2024 season!).

The earliest activity detected in 2023 was part of what was probably a small gully, containing some metalworking waste and a moderate quantity of charred wheat. This wheat was radiocarbon dated to cal. AD 596 – 664. This date is excitingly early – although significantly later than the time of Illtud (usually interpreted to have lived very approximately AD460 – 525) and Samson (very approximately AD 490-565), it probably predates the visit of Samson’s biographer to Llantwit (probably AD 680×700).

As the fame of Llantwit as the cult centre of Illtud, and probably as a burial ground for the kings of Glywysing, grew so a large area appears to have been given over to burial. West of the stream at the Globe Field there are burials of the mid-7th to late 8th centuries, the 2023 excavation produced an infant burial of the 8th-9th centuries as well as a substantial amount of disarticulated bone eroded from somewhere up slope (including a femur with a similar radiocarbon date to the in-situ infant). Undated burials were found at the Hayes in the 1860s. The late 8th to 9th century is also the period of the inscribed stones now in the Galilee Chapel, suggesting that high status burials were focused on the modern church site.

After the 9th century, the site in The Globe Field appears to have been used for livestock, perhaps pigs, and significant erosion occurred during thee 10th and 11th centuries (including of earlier graves). This occurred at a time when the documentary evidence for Llantwit also breaks down – there are no more written references to an Abbot for instance. The focus of local secular power may have moved eastwards, the forces of Dyfed invaded Glywysing in the mid-10th century and the site may have lost royal patronage.

A complete change of land-organisation and land-use was marked by the creation of a network of drystone field walls (the features that had attracted us to the site in the first place). These walls, each 70-80cm thick, bounded a series of small fields and currently appear to date from around the time of the Norman invasion (c. AD 1100). They may reflect major changes brought to site either following the granting of the church to Tewkesbury Abbey or from the influence of the rise of Llandaff Cathedral. The ‘Life’ of St Illtud, written at around this same time, certainly shows a rather pro-Llandaff agenda, as well as a clear intent to stimulate pilgrimage. These fields show the development of lynchets – in which soil moves downslope (usually because of tillage), eroding at the upper edge of the field and accumulating at the bottom of the field, that developed rapidly during the 12th century.

The network of small arable fields does not appear to have survived long. The build up of the lynchets probably caused the stone walls to collapse by the end of the 13th or early in the 14th century.

The later history of The Globe Field appears to have been mainly as a pasture, except for the eventual subdivision of the field to provide a vegetable garden in its southern half.