In another words, it was the 'Sotan School' and included Matsuo, Yoken, Sohen, Fusai, and Hisada Schools that were pedigree of Sotan Shitenno (Four Disciples of Sotan) other than the Sansenke.
いわゆる「宗旦流（そうたんりゅう）」であり、三千家の他に、宗旦四天王の系譜である松尾流、庸軒流、宗徧流、普斎流や久田流なども含む。