Katayama 【縣山】2 The Japanese surnames etymology dictionary.
Oosaka-fu , Kyouto-fu , Nara-ken . Korean type . Personal name . "God" is used from Shinnon (Sinnon, Korea sound: Shinon) which is the emperor of the legendary Sina who tells as Mr. Kang's founder. There is a record of naturalization on Shiga-ken Ootsu-shi on September 3, 1963. The real name is Kang. 姜 reference.