Kaiwa 【貝和】3 The Japanese surnames etymology dictionary.
Tochigi-ken Nasushiobara-shi . Tochigi-ken Yaita-shi Origin of Katata (Katamata). A place name with a record since the Edo period. The place name was also written as "one piece". Tochigi-ken Nasushiobara-shi Sekiya is based. He said that he was engaged in agriculture and forestry in the same area. Estimated in the Edo period.