Etymology and distribution of 靑砥.

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

Oosaka-fu , Aichi-ken . Korean type . Birthplace of Pekkongjin, Hoshu County, Gyeongsangbuk-do, Republic of Korea. I used "Aoi" of Akira. There is a record of naturalization on Osaka-fu Higashioosaka-shi on February 19, 1976. The real name is Li. 李 Ri reference.