Family name ニワヤマ (ニワヤマ ) , all over the world, is an extremely rare last name. Much more prevalently, ニワヤマ is the forename as well as the last name.
Niwayama
アヤノ, タカヒロ, and ヤスヒコ
) , all over the world, is an extremely rare last name. Much more prevalently, ニワヤマ is the forename as well as the last name.