Aaron R. Clark, born 1971, began regular training in judo at age five and started aikibudo and jodo at age thirteen. As a youngster Clark won numerous state and national level judo championships. He is 7th dan, Shihan Jiyushinkai, 3rd dan judo, and his main teachers include: C. E. Clark and K. Geis, and he has also studied Shinto Muso Ryu Jo (gomokuroku) with Phil Relnick. Aaron Sensei is a guest instructor at Bothell Aikido.