Organisational model found in all types of Japanese traditional arts (chanoyu, ikebana, kabuki, koto, samisen, shakuhachi, dance and so on). The iemoto or head of house defines the particular 'school' with its own tradition, emphasised by the use of the same name in successive generations, which may be considered hereditary or made so by adoption.
See http://www.isei.or.jp/books/75/Form.html for a general description.
In three of the four houses of Edo period go there was a name such as Inoue Inseki used professionally by the iemoto through the generations.