Suoka 【壽岡】1 The Japanese surnames etymology dictionary.
Okayama-ken Kurashiki-shi . Origin of Miyagi-ken Kurihara-shi Wakayanagi Takeshi (Muyari). A place name with a record since the Edo period. The place name was also written as "Mushyu". It was the notation of "Mushi" in the same era during the Warring States Period.