Tadahiko Mibuchi (三淵 忠彦, Mibuchi Tadahiko; March 3, 1880 – July 14, 1950) was the first Chief Justice of Japan (1947–1950) and the father of Mibuchi Shinzaburō, a businessman who was in the insurance industry.
Source: “Tadahiko Mibuchi”, English Wikipedia (CC BY-SA 4.0), excerpt