Etymology and distribution of 渫口.

Kaiguchi 【渫口】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Aomori-ken , Tochigi-ken . Tochigi-ken Sakura-shi Origin of the gold branch. A place name with a record since the Edo period. There is a belief that Mr. Kaneda built Kaneda castle in the same area around 1347 (Sadaharu 3 years · Shingairai 2 years).

※ Tochigi-ken Shioya-gun Shioya-machi Kimono is a stopover. A place name with a record since the Edo period. Mr. Kaneda pioneered in 1427 (34 Years of years) and tells that it was also called "Kaneda".