Etymology and distribution of 杣戸.

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

Hiroshima-ken Yamagata-gun Akioota-chou , Hiroshima-ken Hiroshima-shi . A scholar and politician of the Heian period had the name of Sugawara Michizane (Sugawara no Michizane). 菅原 Sugawara reference.