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.









