 It is from this Kenneth Dewar that the present chiefs of Clan Dewar are descended from.The Dewar family whisky business was transformed into a major Scottish company by John Dewar who was created Baron Forteviot of Dupplin in 1917.This Dewar family's seat was at Dupplin Castle which was built between 1828 and 1832, and is one of the grandest houses in Scotland.