Etymology and distribution of 関廣.

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

Okayama-ken , Saga-ken , Kouchi-ken .

① Men's name is common. Okayama-ken Kume-gun Misaki-chou There is distribution in the hole.

② Creation . Saga-ken Karatsu-shi In Kabejima, I tell him that Mr. Hideo Kanda, a vice president of Mr. Hatata, touched from Mr. Hatata, that he was always in peace. Estimated in the Warring States Period. 神田 Kanda reference.