Hashimoto Shoji
Hashimoto Shoji (橋本昌二 Hashimoto Shōji, born 1935)[1] is a professional Go player and a Kansai Ki-in 9-dan.
Hashimoto became pro in 1946 and he became a 9 dan in 1958. At that time 23 was the youngest age anyone had made 9 dan.
He was taught by his father, Hashimoto Kunisaburo. His pupils are Takahara Shuji, Moriyama Naoki, Oda Hiromitsu, Okahashi Hirotada, and Hayashi Kozo.
[1] Bill: Apparently Wikipedia and other English web pages show the wrong kanji for Hashi. I have corrected the kanji here.