Pursuers William Knox and Henry Knox, merchants in Dunbar, supply barley to brewers in Glasgow and Edinburgh. Knox and Knox allege that defender William Law, the sheriff of the county of East Lothian, has set the fiar (fixed price) of barley too high. An act of sederunt in 1723 established the process by which a sheriff of a given county in Scotland would set friars. The act requires that the sheriff appoint a jury of at least eight landowners in the county, with knowledge of the good at issue, to set the price. According to the pursuers, the sheriff's responsibilities are purely ministerial, setting a price agreeable with the verdict of the jury. Knox and Knox allege that Law did not comply with the 1723 act of sederunt in setting the fiar for barley in the county.