The Imperial Princess Masako of Japan (b. 1951). She is a daughter of The Imperial Prince Takahito The 1st Lord of Mikasa and his wife, Takagi Yuriko. She is Sen Masako (from 1983) as the wife of Sen Soshitsu. Her children are Sen Akifumi, Takafumi, and Makiko. [She relinquished her imperial titles and status upon her marriage, as required by law].