sentences:  At the end of the 8th century, the Franks under Charlemagne overthrew the Avar Empire and invaded the Pannonian plains.The Christian Romanized populace living around Keszthely quickly adopted the customs of western Christendom, which meant among other things that they buried their dead without grave goods so now it is impossible to identify them.The Fenékpuszta fortress was repaired again in the 9th century.