Clan Rising
Finlaggan Castle today

Scotland · Ruin

Finlaggan Castle

Finlaggan Castle is the ruined 13th-century masonry stronghold on Eilean Mòr in Loch Finlaggan, Islay, that served as the principal seat of the Lords of the Isles and Clan Donald. The site includes the remains of a medieval chapel dedicated to St Findlugan and other domestic and ceremonial remains; it was a regional administrative centre from the 13th to the 15th centuries.

Photograph via Wikimedia Commons

Its prime

1410

Today

Ruin

As it stood in 1410

What Finlaggan Castle looked like in its prime.

A compact 13th-century stone-built fortified house set on the small island of Eilean Mòr in Loch Finlaggan, defined by continuous coursed masonry walls rising from the shoreline and enclosing domestic ranges and a chapel; roofs in its prime would have been timber and thatch or slate with chimneys and occupied hearths. The building cluster sits surrounded by freshwater, with neighbouring Eilean na Comhairle visible across the loch; in 1410 the complex stood complete and inhabited.

Its story

The story of Finlaggan Castle.

The Monastic Isle and Somerled's Stronghold, 1138

A monastic community was established in the first half of the seventh century on Eilean Mor, the largest of the three islands in Loch Finlaggan on Islay. It was either dedicated to or possibly founded by St Findlugan, an Irish monk and a contemporary of St Columba, who is venerated as a saint in both the Catholic and Eastern Orthodox churches.

In 1138 Somerled, Lord of Argyll, Kintyre and Lorne, and the first to be styled Lord of the Isles, raised a stronghold on the island. It was most likely of timber, and may have been built on the remains of an earlier Iron Age fort. The fortified house whose ruins survive is a masonry building of the thirteenth century.

The Isle of the Council

Two of the loch's three islands did the work of government. Eilean Mor, the Great Isle, and Eilean na Comhairle, the Isle of the Council, were the administrative centre of the Lordship of the Isles from the thirteenth century to the fifteenth, and the castle on Eilean Mor served the Lords as their principal court and the meeting place of their clan chiefs.

Excavation has recovered both the working gear of that court and its symbols, from a quilted sheep's-wool aketon of the kind worn beneath armour to an ancient cross associated with the lords. The stone walls of a medieval chapel on Eilean Mor, dedicated to St Findlugan, have been stabilised, and several sixteenth-century graves are displayed under glass panels.

Betrayal, the Fall of the Lordship and Demolition

Treachery reached inside the castle. Iain Mor MacDonald, 3rd of Dunnyveg, and his son Iain Cathanach were taken prisoner at Finlaggan through the deception of MacIain of Ardnamurchan, held to answer for the hanging of the governor of Dunaverty Castle. Both were later tried and hanged on the Burgh Muir at Edinburgh.

In 1493 the Lordship of the Isles fell to James IV of Scotland, who administered the territory through a tenant-in-chief thereafter. Finlaggan is recorded in 1541 as held from the Crown by Donald MacGilleasbuig. The castle itself appears to have been demolished during the fifteenth or sixteenth century.

Step inside

6 places to explore in 1410.

The record describes 6 distinct spots at Finlaggan Castle, including 2 interiors: chapel of st findlugan (interior), lords' court / main hall (assembly). Create your own photoreal reconstruction and explore every one, more scenes means more rooms, more angles, and more of the place to stand in.

Approach by boat (shore landing)Castle exterior and curtain wallsChapel of St Findlugan (interior)Lords' court / main hall (assembly)Churchyard and burial areaView toward Eilean na Comhairle (Isle of the Council)

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Whose castle

Clans who held Finlaggan Castle.

The families that held Finlaggan Castle for a decade or more across its history, follow a name to its clan.

  • MacDonald

    Seat of Clan Donald and the Lords of the Isles, whose principal court met here from the 13th to the 15th centuries.

Questions about Finlaggan Castle

What is the history of Finlaggan Castle?

Finlaggan Castle was a 13th-century masonry stronghold and the principal court of the Lords of the Isles and Clan Donald. An earlier, likely timber construction was erected in 1138 by Somerled, the first Lord of the Isles. The site served as a regional administrative centre from the 13th to the 15th centuries, and the castle appears to have been demolished in the 15th–16th centuries.

What is inside Finlaggan Castle?

Inside Finlaggan Castle are the remains of the Chapel of St Findlugan and the Lords' court or main hall, where assemblies took place. The chapel was dedicated to, or possibly founded by, St Findlugan, an Irish monk and contemporary of St Columba. The castle also contained domestic ranges, although they survive as ruins.

Why was Finlaggan Castle built, and what was it used for?

Finlaggan Castle was built as a stronghold, principal court and meeting place for the Lords of the Isles and their clan chiefs. It also served as a residence and as a regional administrative centre from the 13th to the 15th centuries. Its wider complex included domestic and ceremonial spaces, as well as a medieval chapel.

Where is Finlaggan Castle?

Finlaggan Castle is on Eilean Mòr in Loch Finlaggan, on Islay, in Argyll and Bute. The castle stands on the small island of Eilean Mòr, with neighbouring Eilean na Comhairle visible across the loch. Finlaggan is around 4 km west of the ferry terminal at Port Askaig.

When was Finlaggan Castle built?

Finlaggan Castle was built in the 13th century, although an earlier likely timber construction stood there from 1138. The site's first-raised year is not recorded, so the surviving masonry castle is best dated by its century. In 1410 the complex stood complete and inhabited.

Which family or clan held Finlaggan Castle?

Finlaggan Castle was held by Clan Donald and the Lords of the Isles. Their principal court met there from the 13th to the 15th centuries, and the castle was the seat of both the clan and the lordship. In 1541, Finlaggan was held from the Crown by Donald MacGilleasbuig.

What did Finlaggan Castle look like in its prime?

In its prime, Finlaggan Castle was a compact 13th-century stone-built fortified house on Eilean Mòr. Continuous coursed masonry walls rose from the shoreline and enclosed domestic ranges and a chapel. Its roofs would have been timber and thatch or slate, with chimneys and occupied hearths, while freshwater surrounded the building cluster.

Is Finlaggan Castle still standing, or is it a ruin?

Finlaggan Castle is a ruin today. The surviving remains include the 13th-century masonry walls of the fortified house, the castle exterior and curtain walls, domestic and ceremonial remains, and the medieval chapel of St Findlugan. The chapel walls have been stabilised, and several 16th-century graves are displayed beneath large glass panels.

Who built Finlaggan Castle?

Somerled erected an earlier, likely timber construction at Finlaggan in 1138. The masonry stronghold that survives in ruin today was built later, in the 13th century, but no builder is named for that phase. Somerled was Lord of Argyll, Kintyre and Lorne and the first Lord of the Isles.
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