Etymology and distribution of 海貝.

Umigai 【海貝】^{レベル3
About 110}  The Japanese surnames etymology dictionary.

Nara-ken , Oosaka-fu , Mie-ken . A variant of 逢坂 .

Umikai 【海貝】^{レベル3
About 110}  The Japanese surnames etymology dictionary.

Hokkaidou , Tokushima-ken Mima-shi , Aomori-ken Aomori-shi .

① Oosaka-fu Originated from Shijoku-shi Nakano - shi (formerly Osaka Township). Place name with a record in the notation of "Osaka" in the Nanboku era era. The place name was also written as "Aika" and "Osaka".

② Oosaka-fu Oosaka-shi birthplace of Tennoji ward Osaka. The place name was also written as "Aisaka". Tokushima-ken Tradition at Mima-shi in Mima-cho.

※ Tokushima-ken Mima-gun Tsurugi-chou Hida Osaka is a place name unknown in the record era. It is distributed in the same place.

③ Hyougo-ken Awaji-shi Originated from Osaka, a small figure in Sano.