Shito-Ryu, along with Goju-Ryu, Wado-Ryu and Shotokan, is one of the four major karate systems of Japan (the Japanese islands excluding Okinawa). It was founded by Kenwa Mabuni (1889-1952), who, like most of karates old masters, was descended from Okinawas so-called warrior (bushi) class or aristocracy. Members of his family served Okinawan lords for hundreds of years. Mabuni started karate training at the age of 13 under Anko Itosu (1830-1915), the man who organized early karate in the Okinawan school system. Itosu was a student of one of Okinawas most famous karate masters, Sokon Matsumura (1792-1887), the forefather of Shorin-Ryu. Itosu took a strong liking to his young pupil and Mabuni learned some 23 kata before the elder man died. Itosu death so grieved Mabuni that he built a shrine in front of the masters grave and stayed close by for a year, practicing his kata daily.