A Medieval-Like Conflict During The 19Th Century Oignies-En-Thierache: The Affair Of The 520 "Bonniers (1): Oignies-en-Thiérachea little village in a forest area owned woods the profits of which were shared by the villagers during the 16th century. Moreover, the latter enjoyed the right to use the woods of their lords, the barons of Vierves, vassals of the principality of Liège.