Etymology and distribution of 関岡.

Sekioka 【関岡】^{レベル5
About 2,100}  The Japanese surnames etymology dictionary.

Okayama-ken , Hyougo-ken , Kanagawa-ken .

① There is a surname including "Monday". Okayama-ken Souja-shi Yamada is headquartered. Ibaraki-ken Toride-shi Yoshida in the Edo period, Akita-ken Yurihonjou-shi It was in the Tokyo era as the shrine of the Sumiyoshi shrine in Kannon cho.

② Korean type . Originated in the city of Gyeongju (aka Tsukishiro (Walson)) in the Republic of Korea. "Moon castle is a true coalition" means. There is a record of naturalization on June 2, 1960 at Gunma-ken An'naka-shi (formerly Usui-gun Matsuida-machi). The real name is Li. 李 Ri reference.