Mihara 【見原】4 The Japanese surnames etymology dictionary.
Nagano-ken Ueda-shi . Nagano-ken Kamitakai-gun Obuse-machi The birthplace of Kozaki Rokawa. A place name with a record since the Warring States Period. The place name was also written as "Land Town". Nagano-ken Kitasaku-gun Tateshina-machi It was in Shiozawa during the Edo period. Saitama-ken also includes Mukawa. Saitama-ken Hanyuu-shi It was in the Edo era in Shimokawazaki. 武川 Surname is present. 武川 reference.