In 1642, Soshitsu SENSO, the 4th head of the Urasenke school, was retained by the already retired Toshitsune MAEDA of the Maeda clan, and was given a 200 koku salary with a residence at San-no-maru in Komatsu-jo castle.
4代仙叟宗室は寛永19年（1642年）に前田氏の当時すでに隠居であった前田利常に仕官し、二百石と小松城三の丸の屋敷を与えられた。