Etymology and distribution of 四十内.

Aiuchi 【四十内】^{レベル3
About 50}  The Japanese surnames etymology dictionary.

Hokkaidou , Saga-ken Fujitsu-gun Tara-chou . Distribution including Gappo.

① Origin of Aomori-ken Aomori-shi Goto (Gapo). A place name with a record since the Warring States Period. In Hokkaidou tell him that he came from Aomori-ken to Hokkaidou Hiyamashi-chou Otobe-chou . Estimated in the Edo period. Also the last name is Gapppo.

② There is 相浦 surname. Saga-ken Fujitsu-gun Tara-chou Meiji New surname by monk of Kofukuji in Shin Urayoro. My pronunciation is Aiura.