Yaichihyōe Kanemitsu (金光 弥一兵衛, Kanemitsu Yaichihyōe; March 30, 1892 – December 25, 1966) was a judoka who was influential in the development of kosen judo. He is credited with the invention of judo techniques like sankaku-jime and hiza-juji-gatame, which were subsequently incorporated into other disciplines, including sambo, Brazilian jiu jitsu and mixed martial arts. He was also known as the teacher of Yasuichi and Naoichi Ono, who took part in the earlier Brazilian vale tudo scene.
Source: “Yaichihyōe Kanemitsu”, English Wikipedia (CC BY-SA 4.0), excerpt