It began in 1582, when a peace treaty with the Gohojo clan led to about 120 former vassals of the Takeda clan and part of Ieyasu's hatamoto (direct retainers of the bakufu, a form of Japanese feudal government headed by a shogun) being combined.
天正10年（1582年）の後北条氏との講和によって、武田氏の旧臣達約120人と家康の旗本の一部が配属されたことから始まる。