Globally, 忠史 (忠史) is an extremely rare unknown gender first name.
Tadashi, Tadasi, Тадаси, Тадаши, تاداشي, ただし, タダシ, タダフミ, 任司, 侃, 儀, 公, 冽, 匡, 唯, 唯士, 唯志, 善, 将, 忠士, 忠志, 恭志, 政, 是志, 格, 正史, 理, 直, 督, 矢, 矩, 禎, 端, 精, 紀, 維, 義, 聡, 肇, 衷, 規, 貞, 賢, and 雅
