From Eikoku Roshukai
I received permission to re-use this text from komei-juku.com as I found it quite comprehensive and very interesting. I have made some modifications to it as it was specific to Yamauchi ha in places so I have added the two further branches to complete the picture.
If there are any errors then I take responsibility for them, if there is anything obvious then please make the correction and email me or let me know so that I can put it right. IanJ 00:39, 23 June 2008 (BST)