Etymology and distribution of 坪ノ上.

Tsubonoue 【坪ノ上】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Toukyou-to , Yamanashi-ken · Shiga-ken . 波木井 's variant. In estimation Shiga - ken Hikone - shi Kaname Town is a name change in the early Edo period early in the "well" of Mr. Ii who was the lord of Hikone of the Clan office. 波木井 Hakii reference.