Etymology and distribution of 上貫.

Uenuki 【上貫】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Tochigi-ken , Saitama-ken . It was in the Edo period in Tochigi-ken Shioya-gun Takanezawa-machi . I will tell him that he was a vassal of Mr. Utsunomiya in the same area. There is "U" in Utsunomiya. 宇都宮 Utsunomiya reference.