Etymology and distribution of 二ツ山.

Futatsuyama 【二ツ山】^{レベル3
About 90}  The Japanese surnames etymology dictionary.

Okayama-ken , Hokkaidou , Hyougo-ken . 盛定 There surname. Okayama-ken Takahashi-shi Uchiyama -shi was in the Edo era in the Bisho Matsuyama clan in the Clan Office. Ishikawa-ken Suzu-shi In Wakamatsucho Umiya it tells that it is the descendant of Heijutsu, the principal of the Heian period. 平 Taira reference.