Relations were further damaged by a schism between the Catholic West and Orthodox East that led to the Byzantine Greeks being labeled as heretics in the West. Throughout the later centuries of the Byzantine Empire and particularly following the imperial coronation of the King of the Franks, Charlemagne (r. 768–814), in Rome in 800, the Byzantines were not considered by Western Europeans as heirs of the Roman Empire, but rather as part of an Eastern Greek kingdom.