The Lords of Žovnek, later Counts of Celje, were named after the castle. The castle was first mentioned in 1278 as Castrum Sevnekke, and later as Sannegg.
The Lords of Žovnek, later Counts of Celje, were named after the fortress. The fortress was first mentioned in 1278 as Castrum Sevnekke, and later as Sannegg.