 In 1290, Oberweiler had its first documentary mention, while Tiefenbach had its first documentary mention in 1316.Besides the documents containing the villages’ first documentary mentions, Oberweiler crops up in a further mediaeval document from 1296 with its modern spelling, otherwise appearing as "Deiffenbach" in 1323, as "Diffenbach" in 1333 and as "Dieffenbach" in 1412.In 1387, both centres, along with the whole "Amt" of Hohenöllen, passed to Count Friedrich II of Veldenz, apparently by way of inheritance, for Friedrich's elder brother Heinrich also received certain properties, among them the Welthersbuch, the Busch and the Treppelswiese at Tiefenbach.