Etymology and distribution of 綱上.

Tsunakami 【綱上】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Shizuoka-ken Haibara-gun Kawanehon-chou . Terrain . Shizuoka-ken Haibara-gun Kawanehon-chou from the west of Okuchi. In the same place I am telling me that Meiji new surname was renamed from Imagawa surname due to concern about conscription of being a descendant of samurai. 今川 Imagawa reference.