Etymology and distribution of 海上.

Unagami 【海上】^{レベル4
About 1,600}  The Japanese surnames etymology dictionary.

江戸谷 Edotani reference.

Unakami 【海上】^{レベル4
About 1,600}  The Japanese surnames etymology dictionary.

Tokushima-ken Naruto-shi . Tokushima-ken Naruto-shi Otsu -cho Daiko has distribution.

Kaijou 【海上】^{レベル4
About 1,600}  The Japanese surnames etymology dictionary.

Gunma-ken , Kanagawa-ken , Toukyou-to .

① Hiroshima-ken Onomichi-shi was in the Edo era. In the same town he tells that he came from Mie-ken Iga-shi in 1581 (Tensho 9 years). Ishikawa-ken Kanazawa-shi Marunouchi was in the Edo era at the Kaga clan in the Clan office.

② Topography . "Island" was added to the victory that is the surname of Kagoshima-ken 's Amami archipelago. Estimated at the time of returning to Japan in 1953. 勝 Katsu reference.