Etymology and distribution of 根形.

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

Tokushima-ken , Hokkaidou , Oosaka-fu . Terrain . Tokushima-ken Tokushima-shi Tokushima-machi castle inside was in the Edo period in the Tokushima Samurai of the Clan office. The same clan says Tokishima -ken Yoshinogawa-shi Kamojima-cho Beefjima lived in the Azuchi-Momoyama period and changed the horses with Horie surname "north". 堀江 Horie reference.