Shirasaka 【白坂】5 The Japanese surnames etymology dictionary.
④ Topography . From Somura and the field. Ishikawa-ken Hakusan-shi Tell him that he was engaged in agriculture in Anji. Estimated in the Edo period. Ishikawa-ken Wajima-shi Monzen-machi, Kuroshima, Tokushima-ken Tokushima-shi Tokushima cho was a member of the Tokugishima clan in the Edo Period during the Edo period.