Sumiko Shiratō (白土 澄子, Shiratō Sumiko; June 26, 1935 – November 25, 2015) known professionally as Sumiko Shirakawa (白川 澄子, Shirakawa Sumiko) was a Japanese actress who specialized in voice acting. She is best known known for her roles as Hiroshi Nakajima in Sazae-san, Hidetoshi Dekisugi in Doraemon, and Ace in Space Ace.
Source: “Sumiko Shirakawa”, English Wikipedia (CC BY-SA 4.0), excerpt