A Community-Led Archaeology Dig on a Tiny Scottish Isle Has Unearthed a Medieval Monastery of ‘International Importance’

The settlement, founded by an early Christian saint in the 500s, is “far more than a small island church.” It may have played a larger role in the Christianization of Britain than historians once realized

Sonja Anderson | Daily Correspondent

October 9, 2026 10:35 a.m.

An aerial view of the archaeological trenches dug around Lismore's parish church, a 13th-century cathedral Clare Ellis et al., *Antiquity*, 2026

Historians have long known that Lismore, a small isle in the Inner Hebrides of Scotland, was home to a medieval monastery called Lios Mòr. Written records detail its sixth-century founding by St. Mo Luóc, one of the early monks who spread Christianity to northern Britain. But with very little archaeological evidence, apart from a broken granite cross, scholars could not confirm Lios Mòr’s size, style or significance—until now.

According to an article published in the journal Antiquity last week, a group of local volunteers led by archaeologist Clare Ellis, of the firm Argyll Archaeology, discovered an early medieval cemetery, various structures and “sophisticated craftworking of international importance” during excavations near Lismore’s 13th-century parish church.

“For centuries, Lismore’s early monastery was known mainly from written records and local tradition,” study co-author Gordon Noble, an archaeologist at the University of Aberdeen, says in a statement. “We can now see that it was a thriving center of worship, craftsmanship and learning, whose importance may have rivaled some of the best-known monasteries in early medieval Britain.”

Newly identified early medieval fragments from Lios Mòr Clare Ellis et al., *Antiquity*, 2026

Lismore’s historical society began searching for the site of Mo Luóc’s monastery in 2016. A “dynamic minority” of the island’s 170 or so residents crowdfunded and ran the digs, Robert Hay, a retired local scientist and dig participant, tells the Guardian’s Esther Addley. Grants, donations and yet more crowdfunding enabled the enthusiastic locals to hire Ellis to lead excavations near the site of Lismore’s 13th-century church, which still holds services.

“The research aimed to determine whether the site of the later medieval cathedral at Lismore was also the location of Mo Luóc’s early monastery, and to assess the scale, nature and status of the settlement,” Ellis says in the statement.

The dig uncovered a medieval cemetery containing at least six burials radiocarbon dated to between 650 and 1040 C.E. The archaeologists also unearthed a piece of an “early medieval cross slab,” per the study. In another area, they found more human remains and additional fragments of carved stone crosses.

“This was clearly a really important early Christian establishment,” Noble tells the Guardian. He compares it to Scotland’s famed Iona monastery, which was founded in 563 C.E. Both settlements were products of a medieval missionary movement that aimed to spread Christianity throughout pagan Britain. The monks succeeded. By the seventh century, Britain was Christianized.

Fun fact: Iona Abbey

The abbey on the island of Iona was founded by St. Columba and survived until the late 12th century, despite frequent Viking attacks. Restoration of the ruins began in 1938.

Elsewhere on the cathedral property, researchers found the remains of an oval-shaped building paved with a layer of limestone. Dated to between the seventh and tenth centuries, it contained remnants of craftwork, handmade pottery, struck flint and an antler.

Another trench boasted extensive evidence of precious metalwork: more than 1,000 pieces of debris, including well-preserved molds and crucibles once used to melt down and cast gold, copper and silver. Hay describes them as “the best small crucibles ever found in Scotland,” per the Guardian.

Clay molds and crucibles are “unusual” finds for a monastic site, Noble tells Scientific American’s Jackie Flynn Mogensen. “It’s one of the largest metalworking assemblages we have from any site, secular or sacred, in this time period,” he adds.

The Lismore monastery appears to have an unusually large footprint. This, coupled with evidence of precious metals and craftsmanship, suggests the community was actually considerably wealthy and “far more than a small island church,” per the statement.

As Noble says to Scientific American, Lios Mòr appears to have been “a very significant mover and shaker” in its day. “It’ll be really exciting to see what shows up in the coming years.”

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