Empress Kōjun
Born Princess Masako Nashimoto, she was the first daughter of Japanese aristocrat Prince Nashimoto Morimasa, the seventh son of Prince Kuni Asahiko and his wife, Princess Itsuko, a daughter of Marquis Naohiro Nabeshima. She was a first cousin of Empress Kōjun of Japan. On her mother's side, she was also a first cousin of Princess Setsuko.