6th generation Taisō Sōshitsu (1694-1726) 泰叟 宗室
Masakichirô, as he was known during his childhood, lost his father Fukyûsai when he was only eleven years old. Omotesenkes Iemoto, Gensô Sôsa, looked after him and made sure he received a propper education.
Having only two daughters himself he arranged to adopt Gensô Sôsa’s second son, probably intending for him to marry his younger sister. However he became ill before this and passed away leaving his adopted son to become the next head of the family at age 8.