There is a theory that it might be Shiragi, since it was written in the fourth section of the first book in Nihon Shoki that he first went down to Soshimori in Shiragi and then came to Torigami no Mine in Izumo.
日本書紀一書第4のまず新羅の曽尸茂梨に天降ってから出雲の鳥上峯に来たとの記述から、新羅の神とする説