Nishina 【西科】3 The Japanese surnames etymology dictionary.
① Ibaraki-ken Hitachioomiya-shi Hiyama, Tochigi-ken Haga-gun Motegi-machi Origin of Hayama (Hiyama). Place name with a record since the North / South morning era. Hiroshima-ken Higashihiroshima-shi Takayamachi Hayama (Hiyama) is a via point. A place name with a record since the Muromachi period. The place name tells that Mr. Hiyama comes from the Kanto district.
③ Korea type . Originated in the city of South Korea Gyeongsangnam-do Changwon (aka Hiyama (Fesan)). There is a record of naturalization on Kagawa-ken Takamatsu-shi on October 12, 1964. The real name is yellow. 黄 reference. There is also sweetness of real name. 甘 reference.