Wow! Thank you, tsuwm! Muchly!
Court of Piepowder, a court formerly held at fairs and markets to administer justice among itinerant dealers.
Wow again, these people had courts of justice?? Fascinating! Were they with real judges (magistrates), you reckon? Or did they perhaps elect one of their own to serve unofficially in this capacity? Golly, I wonder what kinds of cases they heard? CK, Rhuby--any ideas?

And, pie powder can only be flour. Though the term's origin had nothing to do with pies, wouldn't it have been interesting if they had had flour courts? Which doubtless would have evolved into Flower Courts, and wouldn't THAT have been something!