Etymology and distribution of 蘇荘.

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

Hyougo-ken Himeji-shi , Ishikawa-ken Nanao-shi . Hyougo-ken Himeji-shi Oisho cho is based. There is a 手向 surname in the same place. 手向 Temukai reference.