The Lachlan Trust is a registered Scottish charitable organisation which takes donations to preserve the heritage of Clan Maclachlan.

[6] The Clan Maclachlan Society consists of eight branches around the world, including Australia, Britain & Ireland, Canada, New Zealand, and the United States of America.

Lachlan belonged to the family who originally emigrated from Ireland to Scotland in the 11th century, see Irish clan McLaughlin (surname).

[11][12] The King of France had asked for Scottish assistance in a Crusade he was forming, with the Scots answering that they were at war with England and had their hands full.

[11] In 1314 "Guyllascop Maclouchlan in Ergadia" (Gillespie Maclachlan of Argyll)[13] granted forty shillings sterling to the Preaching Friars of Glasgow, the sum of which were to be paid from his pennylands of Killbride near Castle Lachlan.

[8] In 1410 Iain Maclachlan, lord of Strathlachlan, ("Johonne Lachlani domino de Straithlaon"), witnessed a Lamont charter.

[11] In 1487 Iain Maclachlan of Strathlachlan, witnessed a bond by Dougall Stewart of Appin to Colin Campbell, 1st Earl of Argyll.

[4] In 1587, the chief of the clan, "M'Lauchlane", appears on the roll of names of the landlords in the highlands and the isles, on whose land broken men dwelt.

[16] Archibald had only daughters and in turn was succeeded by his nephew Lachlan Og ("Lauchlane oig Macklauchlane his brothers sone").

[4] Lachlan Og led the clan in the Archibald Campbell, 7th Earl of Argyll's campaign against Sir James Macdonald of Islay and his rebellion in 1615.

[4] In the Jacobite Rising of 1715 Lachlan Maclachlan of that Ilk "signed the Address of Welcome to the Old Chevalier, the rightful King James VIII Stuart, on his landing in Scotland".

Robert Forbes, wrote,[4][18] I hope you'll take notice of Collonel MacLachlan of that Ilk, whom the newspapers and magazines neglected.

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.

[18]Following the Jacobite defeat a Government ship sailed up Loch Fyne and shelled Castle Lachlan, forcing the chief's family to abandon their residence,[4] and in Edinburgh the Maclachlan colours were burned on the orders of the Duke of Cumberland.

The Clan Maclachlan Society consists of eight branches around the world, including Australia, Britain & Ireland, Canada, New Zealand, and the United States of America.

[7] The Lachlan Trust is a registered Scottish charitable organisation which takes donations to preserve the heritage of Clan Maclachlan.

The trust, in part with Historic Scotland and the Heritage Lottery Fund, helped raise £100,000 for the preservation of Kilmorie Chapel, the traditional burying place of the chiefs.

The plan is to develop the site for the enjoyment of visitors, with improved pathways, a nature trail and information points about the heritage of the area.

The crest badge used by members of Clan Maclachlan contains the Latin motto FORTIS ET FIDUS, which translates to "strong and faithful".