Hi, from my understanding (and I may be wrong), I assumed that Sanchin-Tensho kata was 'devised' by the late Gogen Yamaguchi Hanshi of the Goju Kai. The reason I made that assumption was that during the 70's I was taught by the following excellent Goju Kai instructors Vasi Naidu Sensei (now teaching and residing in Los Angeles), Stan Hart Sensei and Leo Lapinski Shihan (now teaching and residing in London), and it was there that I was introduced to this amalgamation of Sanchin and Tensho Kata's. I did not see it practiced anywhere else and in hindsight can only assume that it was devised by the Yamaguchi Goju Kai organization. Any other suggestions??
Regards
Buddy Govender
Okinawa Karate-Doh Goju Ryu Jundokan South Africa