Etymology and distribution of 寳積.

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

竜田 Tatsuta reference.

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

Miyagi-ken , Hokkaidou , Yamaguchi-ken .

① Estimated from two countries.

② Toyama-ken Himi-shi Originated from the fact that the two countries are losing their loan.

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

林見 Hayashimi reference.