Etymology and distribution of 平渕.

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

Saitama-ken , Niigata-ken Jouetsu-shi , Tochigi-ken . Terrain . Niigata - ken Jouetsu - shi tells that it changed the field of Morita by "planting" forests by securing water sources and preventing floods during the Warring States era. 森田 Morita reference.