entity_id,period_id,confidence,rationale,source_id,review_status ENT_BALT_PERKUNAS,PER_BALT_PAGAN,high,"""Percunis"" attested in Livonian Rhymed Chronicle c. 1290 CE; thunder cult continuous through the pre-Christianisation period of Lithuania (to 1387+).",SRC_GIMBUTAS_BALTS,reviewed