Etymology and distribution of 桑垣内.

Kuwagaito 【桑垣内】^{レベル3
About 70}  The Japanese surnames etymology dictionary.

Aichi-ken Toyohashi-shi . 坂上 surname. Aichi-ken Toyohashi-shi It was in the Edo period in the castle town. In the same told that he came from Tochigi-ken with Mr. Shingo during the North and South morning era. 神藤 Shindou reference.