relationship_id,subject_entity_id,relationship_type,object_entity_id,confidence,rationale,source_id,review_status,period_id 1622,ENT_WEL_GWYDION,sibling_of,ENT_WEL_ARANRHOD,high,Gwydion and Aranrhod are both children of Dôn; siblings in the Fourth Branch; their relationship is central to the tyngedau (fate-bindings) placed on Lleu,SRC_MABINOGION,reviewed,PER_CEL_MEDIEVAL_WELSH 1626,ENT_WEL_GWYDION,creator_of,ENT_WEL_BLODEUWEDD,high,Gwydion is co-creator of Blodeuwedd alongside Math; it is Gwydion who later transforms her into an owl as punishment for her betrayal of Lleu; Fourth Branch,SRC_MABINOGION,reviewed,PER_CEL_MEDIEVAL_WELSH