In another thread, I was asked about a jujutsu connection to Tang Soo Do, and I speculated the following. I felt that this subject may be worth it's own thread!
Thoughts?
Patrick McCarthy writes in his translation of the Bubishi, "Receiving his menkyo (teaching certificate) in Jigen-ryu ken-jutsu from Ijuin Yashichiro, Matsumura was responsible for synthesizing the unique teaching principles of Jige-ryu to the Chinese and native Okinawan fighting traditions he had also studied. By doing so, Matsumura established the cornerstone upon which an eclectic self defense tradition surfaced in and around the castle district, which in 1927 became known as Shuri-te (Shuri hand)." Page 84.
McCarthy goes on to add that all of his disciples were trained in this tradition, including Funakoshi Gichin and his teachers. When Mr. McCarthy interviewed the eleventh generation Jigen-ryu headmaster of the time, he is reported to have said, "there can be no question that Jigenryu is connected to Okinawa's domestic fighting traditions; however, the question remains, which influenced which!"
The research from a book is the easy part. The real meat of your question is much more difficult to answer. In all honestly, I can only guess at a connection between specific kata and techniques. In my lineage, Hwang Kee learned the kata from books and from students associated with the Chung Do Kwan. I have seen no direct evidence that any of the applications were taught with the kata, so I have no way exploring the historicity of certain moves through that avenue.
However, if I were to make an educated guess, a guess that I have vetted with a sensei in jujutsu and aikijutsu, our version of Chinto kata has exactly the move we are discussing. Near the end of the kata, there is a grabbing motion and a 360 degree turn followed by a simultaneous knife hand strike and kick. This technique is similar to technique called shihonage, which is a common technique in aikijutsu and jujutsu styles. The knife hand strike simulates the strike to the unprotected part of the neck and the kick could be deleted entirely or inserted in many places during the application sequence.
At this time, I am unable to determine if this is an actual Jigen Ryu technique. I suspect that it is and other people who have more experience then me, expect that it is as well. Since Chinto is one of the forms handed down to our style by Matsumura, there is a chance that this technique could be a remnant of that style.
Thoughts?