Zaitsu 【財津】5 The Japanese surnames etymology dictionary.
Oosaka-fu , Iwate-ken Takizawa-shi . Terrain . From bush and island like land. Oosaka-fu Oosaka-shi Shibashima (Kunijima) in Higashiyodogawa Ward is a place name with a record since the Heian period. The place name was also written as "Kunishima" and there was pronunciation of Kunusima.