Nagamura Oyama

Nagamura Oyama was a mid-Kamakura warrior and the fourth head of the Oyama, leading lords of Shimotsuke. Skilled with the bow, he first appears in the Azuma Kagami in 1228 as a yabusame archer. His father Tomonaga died young, and in 1230 his grandfather Tomomasa passed the headship to him.

In 1250 he petitioned the shogunate after the hereditary office of Shimotsuke no ōsuke was reassigned following a complaint by Ise shrine officials; the council ordered its return. He also held the Harima shugo post and died in 1269.