DIERDORF, a town in the Prussian province of the Lower Rhine, formerly in the principality of Neuwied, and now belonging to the mediatised prince of that name, whose palace is there. It is situated on the river Holtzbach, and contains 1150 inhabitants.
DIES MARCHIE was the day of congress or meeting of the English and Scotch, annually appointed to be held on the marches or borders, in order to adjust all differences between them.