However, this was based on the mention of Skaesla in the Diedenhofener Kapitular, issued by Charlemagne on 24 December 805 in Diedenhofen (now Thionville), and there are rival theories as to where Skeasla might be.
Siiski põhines see Schesla mainimisel teoses "Diedenhofener Kapitular", mille Karl Suur 24. detsembril 805 Diedenhofenis (nüüd Thionville) välja andis, ja on konkureerivaid teooriaid, et kus Schesla olla võis.