[2] Near the castle is Kilmorie Chapel, the resting place of the Maclachlan clan chiefs and one of the few remaining medieval church buildings in the West of Scotland.

Lachlan Mor is said to be descended from Anrothan O'Neill an Irish prince who left Ireland in the 11th century.

Other sources stating the first documentary evidence of the clan's ownership of the land known as Strathlachlan on the east of Loch Fyne was in 1292 when Gilleskel Maclachlan received a charter from John, King of Scots.

[7] Thirty years later in 1745, hopes were rising of the Young Pretender's imminent arrival on Scottish soil, Charles Edward Stuart unfurled his banner on the shore of Glen Shiel, the Highland clans were faced with a momentous choice.

Robert Forbes, Bishop of Ross and Caithness, wrote, I hope you'll take notice of Collonel MacLachlan of that Ilk, whom the newspapers and magazines neglected.

At the battle of Culloden he had a regiment of 300 men, whereof 115 were his own people and 182 were Mackleans, who chose to be under his command, seeing their chief was not there.

The said Collonel being the last that received orders from the Prince on the field of battle, he was shot by a cannonball as he was advancing on horseback to lead on his regiment, which was drawn up between the Macintoshes and the Stewarts of Appin.

Using traditional masonry techniques, the goal is to preserve Old Castle Lachlan and to protect it from further aging and weathering.