Etymology and distribution of 乙二.

Otoni 【乙二】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Niigata-ken Niigata-shi Seishin-ku. Summary . Kashiwagi, stand for Kashiwabara. Niigata - ken Niigata - shi In the Misase of the Western Gamaghi, I tell him that I came from Ishikawa - ken in the same place and said that "I will divide between Kashiwagi and Kashiwabara." Estimated in the Edo period. 柏木 Kashiwagi reference. 柏原 Kashiwabara reference.