Getsuro YAMAGUCHI (aka 山口月郎) [c.1909-????]
- His father (山口安郎) formerly served as a Sergeant Major in the Intelligence Unit of the Japanese Army Infantry and worked in the China region. After retirement, he engaged in import and export business in China. Yamaguchi Getsuro later inherited his father's business in China, and then came to Hong Kong in 1940.
- In August 1940, Yamaguchi was detained by the Hong Kong government for allegedly violating the defense and security measures of the Crown Colony. Under strong protests from Japanese diplomatic officials, he was released in October 1940.