Archaeologists have uncovered evidence of a major early medieval monastery on the Isle of Lismore in western Scotland, revealing a wealthy ecclesiastical centre with evidence of high-status craftsmanship and precious-metal production.
The discoveries were made at Lios Mòr (Lismore), in Argyll, where a community-led archaeological project has identified extensive burial grounds, structural remains and evidence of specialised craftworking.
The findings suggest that Lismore was an important religious centre during the early medieval period, potentially rivalling some of the most prominent monasteries in Britain and Ireland.
According to historical tradition, the monastery was founded by Saint Mo Luóc during the sixth century AD, within the Gaelic-speaking kingdom of Dál Riata, which encompassed Argyll, parts of the Hebrides and areas of present-day Northern Ireland.
Despite references to the monastery in historical sources, its precise location, extent and archaeological significance have remained largely unknown.
Uncovering Lismore's early medieval monastery
The investigation was initiated by the Lismore Historical Society to establish whether the island's 13th-century cathedral was constructed on the site of the earlier monastery associated with Saint Mo Luóc.
Led by Dr Clare Ellis of Argyll Archaeology, the project combined archaeological excavation and geophysical survey to investigate the surrounding landscape.
The investigations revealed extensive burial grounds, early structural remains and areas associated with specialised craft production, indicating the presence of a substantial religious community.
Among the finds were casting moulds for precious-metal penannular brooches, intricately decorated animal bones and an early medieval touchstone used to test gold.
These discoveries suggest that the monastery supported skilled craftspeople working with valuable materials, pointing to a level of wealth and status not previously established through archaeological evidence.
The presence of high-status metalworking also indicates that Lismore served a wider function beyond religious worship, potentially operating as a centre of production and learning.
A major centre of early Christianity
During the early medieval period, monasteries played an important role in the religious, political and cultural development of Britain and Ireland.
Within the kingdom of Dál Riata, monastic foundations became influential centres of Christianity, with Iona emerging as one of the most prominent religious communities in the region.
The discoveries at Lismore suggest that the island may have supported an ecclesiastical establishment of comparable importance.
Professor Gordon Noble of the University of Aberdeen, a co-author of the research, said: "For centuries, Lismore's early monastery was known mainly from written records and local tradition. We can now see that it was a thriving centre of worship, craftsmanship and learning, whose importance may have rivalled some of the best-known monasteries in early medieval Britain."
The scale of the burial grounds, together with evidence of early buildings and specialised craftsmanship, suggests that Lismore was a substantial and well-connected monastic settlement.
Evidence of precious-metal production
Of particular significance is the discovery of artefacts associated with the production and testing of precious metals.
Archaeologists recovered casting moulds used to manufacture penannular brooches, a distinctive form of early medieval jewellery consisting of a ring with a small opening and a movable pin.
Such objects were widely worn during the period, with elaborate examples often associated with individuals of elevated social status.
The discovery of a touchstone used to test gold provides further evidence of precious-metal working at the monastery.
Intricately decorated animal bones were also recovered, indicating the presence of craftspeople skilled in producing ornamental objects.
Together, the artefacts suggest that Lismore supported high-status craft production, reinforcing the interpretation of the monastery as a wealthy and influential ecclesiastical centre.
Community-led archaeology reveals Lismore's past
The project was organised by the Lismore Historical Society, with local volunteers contributing to the archaeological investigations.
Bob Hay, a former island resident who helped coordinate funding and volunteers, said: "The discoveries at Lismore demonstrate the value of community-led archaeology in advancing academic research."
The investigations have provided new archaeological evidence for a monastic settlement previously known primarily through historical accounts and local tradition.
The findings also offer new insights into the spread of Christianity in western Scotland and the role of monasteries within the kingdom of Dál Riata.
Further archaeological investigations could help establish the full extent of the monastery, its organisation and its connections with other early medieval religious centres across Britain and Ireland.
Sources : Antiquity - doi:10.15184/aqy.2026.10379