Grandmaster (martial arts) of "Dan" rankings and Black belt and Red belt in martial arts both derive from Judo where they were adopted by its founder Kanō Jigorō. There are many terms similar or equivalent to 'grandmaster' used by various martial arts traditions. Some of these terms derive from older systems, while others are relatively modern. Japanese martial arts commonly use Sensei (先生) meaning "teacher" or literally translated, "born first" or "one who has gone before". A "Sensei" is a person who has knowledge and is willing to teach that knowledge to another. A "Sensei" assists students in "ken shiki" "the pursuit of
Mixed martial arts judo-practitioner Ren-nierand, who gained fame after defeating George Dubois, would fight again in another similar contest, which he lost to Ukrainian Catch wrestler Ivan Poddubny. Another early example of mixed martial arts was Bartitsu, which Edward William Barton-Wright founded in London in 1899. Combining catch wrestling, judo, boxing, savate, jujutsu and canne de combat (French stick fighting), Bartitsu was the first martial art known to have combined Asian and European fighting styles, and which saw MMA-style contests throughout England, pitting European Catch wrestlers and Japanese Judoka champions against representatives of various European wrestling styles. The history of modern MMA competition