Where did Kano's ashiwaza come from?

The story goes that Kodokan judo was derived primarily from Tenjin Shinyo Ryu jujutsu and Kito Ryu jujutsu - with some interesting tidbits from a bunch of other schools thrown in.  So, we watch some demonstrations of Tenjin Shinyo and of Kito Ryu...

Now, I realize these are not demonstrations of the entire systems - but one would think these demos would be largely representative of the overall flavor of the strategies embodied by the two systems.

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So, the question arises, Where did the wondrous variety of ashiwaza in Kodokan Judo come from?  The only ashiwaza that I see in the above demos are a couple of osotogari/kosotogari type things.  Granted, those Kito/Tenjin demos are ostensibly battlefield ideas and some of the modern judo repertoire of ashiwaza would be impractical for that purpose.  If you look at the Kodokan Goshin Jutsu and Kime no kata, you get a similar range of ashiwaza - mostly only osotogari.

So, even if it was some of the Kodokan demigods in the 1890's that came up with all these ashiwaza from their randori/shiai experience, you'd expect some of those ashiwaza ideas to be reflected in the older material.

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So, where (in the Koryu) does the gendai ashiwaza come from?

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Patrick Parker
www.mokurendojo.com