Etymology and distribution of 長翁.

Nagao 【長翁】^{レベル3
About 50}  The Japanese surnames etymology dictionary.

Kouchi-ken , Yamaguchi-ken , Oosaka-fu . There is a 広石 surname. Kouchi-ken Kouchi-shi Marunouchi was in the Edo period in the Tosa clan of the clan office, the Qing Dynasty of Yamaguchi-ken Shimonoseki-shi was the Qing san clan of the Clan office. Tosa samurai told from Yamaguchi-ken western part (formerly Nagato country) that he came to the early Edo period and was Nagasaki surname. 長崎 Nagasaki reference.