 The 1371 document with the name "Nyder Rudewilre" (“Lower Ruthweiler”) deals with a border description defining the geographical limits of the "Burgfrieden" (castle's sovereign area) of Castle Lichtenberg.This further shows that at that time, there were two villages, a lower one and an upper one.Ruthweiler's peasants, like those in other villages in the "Burgfrieden", had to do compulsory labour for Castle Lichtenberg.