 Sen Sōshitsu XV

He was born on 19 April 1923 as the first son born to the 14th generation head of Urasenke (Sen Sōshitsu XIV, Tantansai) and Tantansai's wife, Kayoko (nee Ito Kayoko), and was named Masaoki (政興) by his grandfather, the 13th generation head of Urasenke (Sen Sōshitsu XIII, Ennōsai).Throughout his childhood and youth, the name by which he was known was Sen Masaoki.