In England, also, there were then the great fairs of Winchester and Stourbridge, and the fairs of Besancon and Lyons in France, and in each of those fairs a Court sat to administer speedy justice by the Law Merchant to the merchants who congregated in the fairs, and in case of doubt and difficulty to have that law declared on the basis of mercantile customs by the merchants who were present. You will find this Court mentioned in the old English law books as the Court Pepoudrous, so called because justice was administered "while the dust fell from the feet," so quick were the Courts supposed to be.

The Elements of Mercantile Law, T.E. Scrutton, 1891, p 7.