Etymology and distribution of 相内.

Ainai 【相内】^{レベル5
About 3,700}  The Japanese surnames etymology dictionary.

Shiga-ken , Kyouto-fu , Gunma-ken .

① Shiga-ken Takashima-shi Shigeru Takashima-shi birthplace of Shin -Aka Town. A place name with a record since the Warring States Period. The place name also pronounced Aeba.

② Heteromorphism of 相場 .

Aiuchi 【相内】^{レベル5
About 3,700}  The Japanese surnames etymology dictionary.

Toyama-ken Uodzu-shi . Thing . Toyama - ken 's four - store shop uses the word "40". Meiji New Last name in estimation.