Originally coming from Saint-Clair in Normandy, the Sinclair clan arrived in the British Isles with William the Conqueror in the 11th century.
The clan would eventually settle in Caithness and it is here that their traditional clan seat would be located at Castle Sinclair Girnigoe – which was built by the family in the 15th century. The castle is now in ruins but can still be visited just north of Wick.
Another branch of the clan, the Sinclair Earls of Orkney and Lords of Shetland, would also construct a castle at Roslin in Midlothian in the late 14th century. This castle is still under the ownership of a Sinclair family today but is now partially ruined.
The current clan chief of Clan Sinclair is Malcolm Sinclair, 20th Earl of Caithness.