Crest: On a chapeau doubled Ermine a hand holding a dagger, Proper
Motto: Aut Agere Aut Mori (Either action or death)
Origin of Name: Placename from Berkeley, England
Lands: Aberdeenshire, Moray, and Ayrshire
Historic Seat: Towie Barclay Castle
Clan Chief: Peter Barclay of that Ilk
The Barclays (in Ulster) are down as a sept of Clan MacFarlane (from their Society website).