Etymology and distribution of 保壽.

Hoju 【保壽】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Hyougo-ken . Origin of Okayama-ken Waka (Wake) County. A place name with a record since the Heian period. In Hyougo-ken tell him that he was managing the gutter at Okayama-ken Wagi-gun. Estimated in the Edo period.