Etymology and distribution of 廣増.

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

Ibaraki-ken , Aomori-ken Hachinohe-shi , Hokkaidou . Terrain . From Yanagi and the town. Ibaraki-ken Inashiki-shi Shibasaki is based. It was in the Edo period in Nagano-ken Chikuma-shi . Nagano-ken Chikuma-shi Distributed in the ya - ya. There is 柳原 surname in the same place. 柳原 Yanagihara reference.