 In connection with this, Langweiler also had its first documentary mention in Waldgrave Konrad's 1276 will, which is preserved in a copy.Langweiler belonged to the "Hochgericht auf der Heide" (“High Court on the Heath”).Together with other villages in the Grumbach castle domain ("Burgbann"), the village was pledged in 1363 to Sponheim-Starkenburg.