1) Silesian tribe 
Opolans (Opolanie; Opolané; Opolanen) were the West Slavic tribe that lived in the region of upper Odra. Their main settlement (gord) was Opole. They were mentioned in the Bavarian Geographer, under the name Opolini, as one of the seven tribes living in Silesia (Silesian tribes). The other six were: Dziadoszanie, Golęszyce, Ślężanie, Trzebowi...