Karate-do ("empty hand way") is part of a cultural tradition greater than 600 years old, a gift to the world from the islands of Okinawa, Japan. Shorin-ryu is descended from Shuri-te, which originated around Shuri, the ancient capitol of the Ryukyu kingdom. Shuri-te, Naha-te and Tomari-te are the three major historical branches of karate-do.
The most recent recorded teaching lineage of the Shidokan style traces back to 1809 and includes Seikichi Iha, Hanshi, 10th Dan, who became part of this great lineage through his early training with Sensei Gusukuma (1890-1954) and Sensei Miyahira (1918-2010). Mark McCloud, 7th Dan, continues that tradition by leading the Original Okinawan Karate of Holt dojo, directly under Sensei Iha.