The etymology of the Dutch dialect word guus has been discussed for a long time, without coming to a reasonable solution. There is however a possibility that the Old Dutch word hiwiski, which is considered to be extinct for a long time, leads to a solid explanation.
In the department of the Lys, the cassation appeal against criminal judgments was introduced in 1796 and could be made by both the criminal convicts and the Public Prosecution Service. The first cassation appeal was lodged on 5 May 1796 and the last on 18 December 1813. In total, 187 (24%) of the 779 criminal judgments were appealed in cassation, in 172 cases by 319 criminal convicts and in 15 cases by the Public Prosecution Service. Of those 187 cassation appeals, 167 (89.3%) were rejected and 20 (10.7%) were accepted. In the latter cases, this led to the annulment of the contested judgment and, in most cases, the criminal proceedings were (partially) repeated for an equivalent, nearby criminal court.