 Theisberg's 992 first documentary mention was in a document issued by Emperor Otto III in which Bishop Hildibald of Worms transferred to Count Wolfram the tithes from all the bishopric's holdings in the wooded lands on the Rhine’s left bank against which the bishopric took ownership of commodities in the area of the villages of Altenglan and "Deinesberge" (Theisberg).This, however, does not seem to make much sense, and it would also seem that the Bishop of Worms took liberties in this deal to which he was not entitled.Whatever the truth is, a village named Deinsberg near a castle of that same name already existed at the time that the document was issued.