Etymology and distribution of ウルフ.

Urufu* 【ウルフ】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Toukyou-to Hachiouji-shi . Toukyou - to Hachiouji - shi tells Okoshi (oogoe) was the last name. Estimated in the Edo period. There is an example of using a "valley" for a store of a shop name. 大越 Ookoshi reference.