 It had its first documentary mention in 1318 as "Hupvilre" – and its last documentary mention in 1588 as Heubweiler by Johannes Hoffmann, but even then, Hoffmann described it as an old (that is, former) village site.As one of the villages within the Castle Lichtenberg "Burgfrieden", people from Ruthweiler always attended services at the church at Castle Lichtenberg, which from the Middle Ages to early modern times was Saint George’s Chapel, and as of 1758 the newly built church near the tithe barn.Ludwig II, Duke of Zweibrücken, who died in 1532, was already a supporter of the Reformation, which was introduced bindingly, and according to Martin Luther’s teachings, for all the duchy’s subjects under Ludwig’s brother, Ruprecht, who was acting as regent for Duke Wolfgang, who had not yet come of age.