Clan

MacLachlan

Clann Lachlainn
Argyll Seat: Castle Lachlan Chief: Euan MacLachlan

Clan MacLachlan held lands in Argyll, with its historic seat at Castle Lachlan. The line traces to Lachlan Mor, and the MacLachlan tartan is worn today by members and descendants across the world.

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Things to know about Clan MacLachlan

Gaelic name Clann Lachlainn
Motto Fortis et Fidus
"Brave and trusty"
Plant badge Rowan / mountain ash
Region Argyll
Strathlachlan, Cowal
Seat Castle Lachlan
Seat of MacLachlan of MacLachlan
Current chief Euan MacLachlan
25th Chief of Clan MacLachlan
Documented tartans 6 tartans · 0 septs
6 tartans · 1 clan family

The MacLachlan tartans

Every documented tartan in our catalogue tied to this clan. Tap a card to view the variant in our configurator.

MacLachlan Muted Tartan swatch
MacLachlan Muted Tartan
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MacLachlan Tartan swatch
MacLachlan Tartan
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MacLachlan Weathered Tartan swatch
MacLachlan Weathered Tartan
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MacLachlan Ancient Tartan swatch
MacLachlan Ancient Tartan
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MacLachlan Old Tartan swatch
MacLachlan Old Tartan
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MacLachlan Old Ancient Tartan swatch
MacLachlan Old Ancient Tartan
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The clan story

Clan MacLachlan — Origins & History

Origins · The early MacLachlan line

Clan MacLachlan takes its place among the historic families of Argyll. The line is traditionally traced to Lachlan Mor, and over the centuries the MacLachlan chiefs built the territory, alliances and identity that the name still carries today.

Like all the great Scottish kindreds, MacLachlan was bound together less by a single bloodline than by allegiance to its chief and its country. Members took the chief's surname, followed his banner in war, and wore his colours — the origin of the tartan tradition that survives in the MacLachlan setts sold today.

“Fortis et Fidus” — Brave and trusty.

— the motto of Clan MacLachlan

Through the Centuries

From its base in Argyll, Clan MacLachlan shared in the great movements of Scottish history — the wars of independence, the rise and fall of the Stewart kings, the Jacobite risings of the 18th century, and the upheavals that scattered Highland and Lowland families alike across the globe. The family seat at Castle Lachlan remains a focus of MacLachlan heritage.

The Dress Act of 1746 banned Highland dress for a generation, and the Clearances that followed drove many Scottish families overseas. Yet the MacLachlan identity survived — carried in names, in records, and in the cloth. The clan is led today by its chief, Euan MacLachlan, recognised by the Lord Lyon as head of the name.

Today the MacLachlan tartan is worn at weddings, gatherings, Highland games and Burns Night celebrations from Scotland to North America, Australia and New Zealand — a living link between the modern family and its Scottish origins.

Across the Atlantic

MacLachlan in America

Scots carrying the MacLachlan name crossed the Atlantic in successive waves — as colonists, as Highland emigrants after the Clearances, and as part of the great 19th-century migration. Their descendants today form part of the millions of Americans who claim Scottish ancestry.

The MacLachlan name in the New World

Scottish emigration to North America unfolded over three centuries. Early settlers came to the Carolinas, Virginia and Nova Scotia in the 1700s; later waves followed the Highland Clearances of the late 18th and 19th centuries, settling in Canada, the Appalachians, the Midwest and beyond. Families carrying the MacLachlan name took part in this movement and helped build the communities they joined.

Today the United States is home to a large population of Scottish descent, and the MacLachlan name endures among them. Scottish heritage is celebrated each year at more than two hundred Highland games across North America, where the MacLachlan tartan can be seen alongside the setts of every other Scottish family.

April 6 is National Tartan Day in the United States — declared by the US Senate in 1998 and proclaimed by the President in 2008 — marking the anniversary of the 1320 Declaration of Arbroath and honouring the contribution of Scottish-Americans, including those who carry the MacLachlan name.

Argyll
Ancestral region of Clan MacLachlan
200+
US Highland Games each year
April 6
National Tartan Day
Heritage centre
Scottish Tartans Museum

Franklin, North Carolina — the only museum of Scottish tartans in the United States, with setts from clans and families across Scotland on display.

Cultural milestone
National Tartan Day

Declared by US Senate Resolution in 1998 and signed into US Presidential Proclamation in 2008. April 6 each year — the anniversary of the 1320 Declaration of Arbroath.

Research
Trace your line

Our heritage team can help you research the MacLachlan name and choose the right tartan for your family. Genealogical records, parish registers and emigration lists are the place to start.

Major US Highland Games with Clan Donald tents

Grandfather Mountain Games
Linville, NC · second weekend of July
Stone Mountain Highland Games
Stone Mountain, GA · mid-October
Pleasanton Scottish Games
Pleasanton, CA · Labor Day weekend
NYC Tartan Week
Manhattan · first week of April

Notable MacDonald Americans

1746
The Dress Act
Highland dress banned for a generation; the MacLachlan tartan tradition survived the proscription.
1782
The ban repealed
Tartan returns to Scottish life and begins its journey into the wider world.
2008
US Tartan Day
Presidential proclamation honours Scottish-Americans, including those of the MacLachlan name.
McDonald · Macdonald · M'Donald

All spellings, one clan

The Mc, Mac, and M' question

All these spellings are the same name. Mac is the Scottish Gaelic for “son of.” As Highland families moved into the Lowlands, Ulster and the American colonies, clerks wrote the name as they heard it. The shorter Mc form became common in Ulster and America; Mac stayed common in Scotland.

Whatever spelling appears on your records, you carry the MacLachlan name and wear the same tartan.

MacLachlanThe Scottish-Gaelic original
McLachlanUlster & American dominant form
M'Lachlan19th-c. printing convention
Frequently asked

Questions about Clan MacLachlan

Answers to the questions we hear most often from customers and visitors researching their lineage.

Is McLachlan the same as MacLachlan?

Yes. Mac and Mc are variants of the same Gaelic prefix meaning “son of.” However the MacLachlan name is spelled on your records, you belong to the same family and wear the same tartan.

Can anyone wear the MacLachlan tartan?

Yes. Tartan is freely worn today. The MacLachlan tartan is most associated with those who carry the name or descend from the family, but anyone may buy and wear it for a wedding, a Highland event or everyday style.

Who is the chief of Clan MacLachlan?

The chief is Euan MacLachlan, 25th Chief of Clan MacLachlan. The chief is recognised by the Lord Lyon King of Arms, Scotland's heraldic authority.

What is the MacLachlan motto?

The motto is “Fortis et Fidus” — Brave and trusty. Mottoes appear on the clan crest and express the character the family chose to be known by.

Which MacLachlan tartan should I choose?

The main MacLachlan tartan is the usual default. Where Modern, Ancient, Weathered and Dress versions exist, they differ only in the depth of the colours, not the pattern — Modern is boldest, Ancient softer, Weathered muted, and Dress the brightest, most formal version. Choose whichever suits the occasion.

My surname is linked to MacLachlan — can I wear the tartan?

Yes. If your name is a recognised sept or spelling variant of MacLachlan, you are entitled to wear the MacLachlan tartan. If you are unsure, our heritage team can help you check the connection.

How did the MacLachlan name come to America?

Scots carrying the MacLachlan name emigrated to North America from the 1700s onward — as colonists, as Highland emigrants after the Clearances, and during the 19th-century migration. Their descendants are among the millions of Americans of Scottish ancestry today.

Where can I research my MacLachlan family history?

Start with Scottish parish registers, the National Records of Scotland, and emigration and census records for the country your family settled in. Clan societies and our own heritage team can help you connect your MacLachlan line to its Scottish origins.