Etymology and distribution of 根賀.

Nega 【根賀】^{レベル3
About 60}  The Japanese surnames etymology dictionary.

Miyagi-ken Ishinomaki-shi , Hokkaidou , Kanagawa-ken . Distribution including Yasuhara as well.

① Fukushima-ken Date-shi birth of Hobara-cho. A place name with a record since the Warring States Period.

② Ooita-ken Kunisaki-shi Originated from the hospitality of Iimi's underwear in Kunimi cho.

③ A variant of 安原 . In Shimane-ken tells you that you changed from Yasuhara surname by Hiroshima-ken . Estimated in the Edo period. 安原 Yasuhara reference.