From: Essence of Ninjutsu, Dr Masaaki Hatsumi (1988)
Iga-ryu ninjutsu is a tradition. Along with Koga-ryu, Iga ryu is the most famous. It origonating in the Iga region, The area around today’s Iga-Ueno, Mie Prefecture.
According to legend, ninjutsu was founded in Japan by a former Chinese general in exile called Ikai 異勻, the name means “different stranger from abroad” and was very probably not his real name. There are also many links to Shingon Buddhism and Shugendō, but as these are esoteric sects, there is little recorded about this.
During the Muromachi period (1336 to 1573) the people of Iga region were independent of central control, and they established a form of republic called Iga Sokoku Ikki.
Men from Iga (Iga mono; 伊賀物) were mentioned in historical chronicles of 1487 when Shogun Ashikaga Yoshihisa attacked Rokkaku Takayori. Iga mono opposed Rokkaku’s side. Since then Iga mono been synonymous with ninja.
- Gamon Doji (1065-1068),aka Fujiwara Tikata > influenced Gyokko ryu
- Garyu Doji (1074-1076), founded Hakuun-ryu > influenced Kukishinden-ryu, Shinden Fudo ryu, Gyokko ryu
- Unryu Doji (1074-1076)
- Iga Heinabe Yasukio (1096), aka Hachiryu Nyudo > influenced Gyokko-ryu
- Tozawa Hakuunsai (1159), founded Gyokko Ryu > influenced Kurama-ryu
- Ise Saburo Yoshimoro (1159) > influenced Kijin Chosui-ryu
- Togakure Daisuke (1207-1210), founded Togakure ryu < influneced Hakuun-ryu
- Kumogakure Gen an (1249-1255)
- Tozawa Nyodo Gen eisai (1334-1335) > influenced Gyokko-ryu
- Hachimon Hyouun (1379-1380)
- Kuryuzu Hakuun (1394-1427)
- Tozawa Ryutaro (1487-1488)
- Momochi Sandayu I (1532-1554) > influenced Koto-ryu, Gyokko-ryu
- Iga Heinai Saemon no jo Ienaga (1532-1554), aka Kumogakure Hoshi – founded Kumogakure-ryu, techer for the Hattori famly]
- Kami Hattori Heitaro Koreyu (1532-1554)
- Naka Hattori Heijiro Yasuyori (1532-1554)
- Shimo Hattori Heijuro Yasunori (1532-1554)
- Momochi Sandayu II (1573-1591) > influneced Koto-ryu
Translate by Luke Crocker from HERE.