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Cognomen 義信 (Yoshinobu , 義信 ) , globally, is quite a rare surname. The last name 義信 is characteristic of Japan, where it is quite a rare surname, Taiwan, where it is a rare surname, and Singapore. Measured by absolute frequency, it most frequently occurs in Eastern Asia, particularly Japan, China, and Taiwan. Very seldom, 義信 is the forename as well as the last name.