I noticed the thread on Toei Ryu Iai Batto Renmei Iiado and I have been a personal student of Saiko Shihan Nishiuchi, Mikio for the last 2 years. Shihan is a 10th dan in Iiado and has precticed for 45+ years. He is also a 7th dan kobudo master (an entirely seperate art and similar to Soke Hatsumi's Bujiin Kan. Shihan is also responsible for training many regional masters such as Dave Kovars in Sacramento and an 8th dan in Reno.
While I have not updated my site for some time www.myspace.com/sanjurosensei
I should be able to answer most of your questions. Iiado originated in Tossa (Kochi) Japan and followed the lineage its 7th successor who made the art famous was Hasegawa Eishin.
1. Hayashizaki Jinsuke Minamoto Shigenobu (Founder of Shimmei Muso Ryu)
2. Tamiya Heibei Narimasa (Founder of Tamiya Ryu)
3. Nagano Muraku Nyudo Kinrosai
4. Momo Gumbei Mitsushige
5. Arikawa Shozaemon Munetsugu
6. Banno Dan-Uemon-no-J˘ Nobusada
7. Hasegawa Chikaranosuke E´shin
8. Arai Seitetsu Seishin
9. Hayashi Rokudayu Morimasa
10. Hayashi Yasudayu Seisho
11. Oguro Motouemon Kiyokatsu (After Oguro, there came into being 2 branches formed on philosophical differences between two students of Oguro: The Shimomura-ha & Tanimura-ha (branches), the former being headed by Maysuyori Teisuke Hisanari and the latter by Matsuyoshi Teisuke (Shinsuke) Hisanari, who became the 12th sōke.
The lineage continued on until the death of Oguro Motoemon Kiyokatsu when the ryu split into two branch schools (Ha), the Tanimura ha and the Shimomura ha. The Tanimura ha is still known today as Muso Jikiden Eishin ryu, while the Shimomura ha was renamed to Muso Shinden ryu by the 16th headmaster, Nakayama Hakudo. Just an aside, he is often named as the "founder" of Muso Shinden ryu. Actually it was only after his death that his followers started to formally use this name for Hakudo's particular style. Anyway, Toei Ryu is a direct teaching of the original line without deviations such as those found in Muso Shinden Ryu. I am glad to answer any questions and train with Shihan every Saturday in Vacaville CA. I will try to check in here from time to time, but it is better to contact me on the myspace site. Ossu! Sensei : )~