entity_id,period_id,confidence,rationale,source_id,review_status
ENT_FINN_UKKO,PER_FINN_TRADITIONAL,high,Named in Agricola's 1551 deity list (earliest written source) as the primary sky-thunder deity of the Häme; pervasively invoked in the Kalevala oral tradition. Pre-Christian attestation confirmed by Agricola.,SRC_AGRICOLA_PRIMER,reviewed