Onchi 【恩地】4 The Japanese surnames etymology dictionary.
① Birth of Yamagata-ken Yamagata-shi Kashiwagura (Kashiwagura). A place name with a record since the Edo period. The place name was also written as "Kashiwa storage." Yamagata-ken Higashimurayama-gun There is a tradition in Nakayama-machi . Yamagata-ken Yamagata-shi Kasagi-machi was in the Edo period in the clan of the Yamagata of the Clan office.