Hamako Watanabe (渡辺 はま子, Watanabe Hamako; 27 October 1910 – 31 December 1999) was the stage name of a Japanese popular singer, who was active during the Shōwa period of Japan, before, during and after World War II. Her real name was Hamako Kato.
Source: “Hamako Watanabe”, English Wikipedia (CC BY-SA 4.0), excerpt