Wikipedia
Csíkszék
Csíkszék was one of the Székely seats in the historical Székely Land.
It administered two sub-seats (Hungarian: fiúszék, Latin: sedes filialis), namely Gyergyószék and Kászonszék. It was divided on the natural borders of the region, as the main territory of Csíkszék lied in the valley of the Olt River, Gyergyószék lied in the valley of Maros, while Kászonszék lied in the valley of Kászon.