玉 GYOKU : jewel, ball
心 SHIN : heart, mind, spirit, heart
流 RYŪ : current, a sink, flow, forfeit
忍 NIN : endure, bear, put up with, conceal, secrete, spy, sneak
法 PŌ : method, law, rule, principle, model, system
It is believed that Sasaki Goemon Teruyoshi founded the school based on Gyokkō-ryū and it was taught around the Kishu and Takeda provinces for many generations. We don’t know much about the first 10 generations, not even their names. This shouldn’t be surprising since it was dangerous times, they didn’t keep records that could be confiscated and used against themselves.
After Tokugawa united Japan in 1603 the Edo Period started (1603-1867), now there was peace. Then in 1624-1644 it is recorded that the school was headed by Toda Seiryu Nobutsuna (24’th Sōke of Togakure-ryū).
If there still exist Densho with techniques they have not been taught officially by Hatsumi Sōke. I have seen only a few Taijutsu concepts, no Kata techniques. It might be that this school was more specialised in espionage and tactics and not so much fighting. I don’t know much about this school.
With the new Sōke maybe something will be revealed soon?
Sasaki Goeman Teruyoshi
Sasaki Gendayu Sadayasu
Toda Seiryu Nobutsuna (1624-1644)
Toda Fudo Nobuchika (1658-1681)
Toda Kangoro Nobuyasu (1681-1704)
Toda Eisaburo Nobumasa (1704-1711)
Toda Shinbei Masachika (1711-1736)
Toda Shingoro Masayoshi (1736-1764)
Toda Daigoro Chikahide (1764-1804)
Toda Daisaburo Chikashige (1804-1824)
Toda Shinryuken Masamitsu (1824-1909)
Takamatsu Toshitsugu Uoh (1909-1972)
Hatsumi Masaaki (1972-2020)
Kan Junichi (2020-)