Clan

Sinclair

Na Sionclairich
Caithness Seat: Girnigoe Castle Chief: Malcolm Sinclair

Clan Sinclair held lands in Caithness, with its historic seat at Girnigoe Castle. The line traces to William Sinclair, and the Sinclair tartan is worn today by members and descendants across the world.

Is your surname a sept? Try Bowie, Donaldson, MacBeth, Hutcheson, MacGillivary, Whannel, Reaoch, Hewison — and 5 more. See the full sept directory →

Things to know about Clan Sinclair

Gaelic name Na Sionclairich
Motto Commit thy work to God
"Commit thy work to God"
Plant badge Whin / gorse
Region Caithness
Caithness, Orkney, Roslin
Seat Girnigoe Castle
Historic seat of the Sinclair earls
Current chief Malcolm Sinclair
20th Earl of Caithness
Documented tartans 6 tartans · 0 septs
9 tartans · 1 clan family

The Sinclair tartans

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

Sinclair Hunting Tartan swatch
Sinclair Hunting Tartan
View this tartan
Sinclair Hunting Weathered Tartan swatch
Sinclair Hunting Weathered Tartan
View this tartan
Sinclair Tartan swatch
Sinclair Tartan
View this tartan
Sinclair Ancient Tartan swatch
Sinclair Ancient Tartan
View this tartan
Sinclair Hunting Ancient Tartan swatch
Sinclair Hunting Ancient Tartan
View this tartan
Sinclair Brown Tartan swatch
Sinclair Brown Tartan
View this tartan
Sinclair Dress (Dance) Tartan swatch
Sinclair Dress (Dance) Tartan
View this tartan
Sinclair of Ulster Tartan swatch
Sinclair of Ulster Tartan
View this tartan
Sinclair of Ulster Ancient Tartan swatch
Sinclair of Ulster Ancient Tartan
View this tartan
The clan story

Clan Sinclair — Origins & History

Origins · The early Sinclair line

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

Like all the great Scottish kindreds, Sinclair 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 Sinclair setts sold today.

“Commit thy work to God” — Commit thy work to God.

— the motto of Clan Sinclair

Through the Centuries

From its base in Caithness, Clan Sinclair 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 Girnigoe Castle remains a focus of Sinclair heritage.

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

Today the Sinclair 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

Sinclair in America

Scots carrying the Sinclair 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 Sinclair 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 Sinclair 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 Sinclair name endures among them. Scottish heritage is celebrated each year at more than two hundred Highland games across North America, where the Sinclair 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 Sinclair name.

Caithness
Ancestral region of Clan Sinclair
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 Sinclair 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 Sinclair 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 Sinclair name.
McDonald · Macdonald · M'Donald

All spellings, one clan

Spelling variants

Like most Scottish surnames, Sinclair has been written in several ways over the centuries. Spelling was rarely fixed before the 19th century — clerks, ministers and ship's pursers each recorded a name as they heard it, so variations appear even within a single family.

Whichever form appears on your birth certificate, marriage record or family Bible, it is the same Sinclair name, and you are entitled to wear the Sinclair tartan.

SinclairMost common modern spelling
SinclaireHistoric variant
Frequently asked

Questions about Clan Sinclair

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

Are the different spellings of Sinclair the same family?

Generally yes. Scottish surname spelling was not standardised until the 19th century, so Sinclair appears in several forms in old records. They normally refer to the same family and share the same tartan.

Can anyone wear the Sinclair tartan?

Yes. Tartan is freely worn today. The Sinclair 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 Sinclair?

The chief is Malcolm Sinclair, 20th Earl of Caithness. The chief is recognised by the Lord Lyon King of Arms, Scotland's heraldic authority.

What is the Sinclair motto?

The motto is “Commit thy work to God” — Commit thy work to God. Mottoes appear on the clan crest and express the character the family chose to be known by.

Which Sinclair tartan should I choose?

The main Sinclair 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 Sinclair — can I wear the tartan?

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

How did the Sinclair name come to America?

Scots carrying the Sinclair 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 Sinclair 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 Sinclair line to its Scottish origins.