 In 1350, the "Ortsteil" of Nanzweiler had its first documentary mention as "Nanczvilre", while Nanzdiezweiler was first mentioned in 1437 as "Diezwiler" and Dietschweiler in 1477 as "Dyzweiler".On 17 March 1383, the village of "Monchwilr off dem Glan" was pledged along with all its appurtenances (and under feudalism this, of course, included the people) for 340 Rhenish guilders to Sir Bechtolff von Flörsheim ("Flerßheim"), Squire Philips von Breidenborn and their heirs – with the exception, however, of the mountain at "Nancwilr".On the same day, however, the agreement seems to have been amended to include this mountain, even mentioning it specifically, and accordingly the monetary amount involved was raised to 480 Rhenish guilders.