What is Niu's wife, Princess Iron Fan?

Princess Tiefan, the daughter of King Qiuci, studied in 294-394 A.D., and in 382 A.D., she married Niu Wangmo, the Indian Pingtian Saint, and gave birth to a son named Hon Hai 'er. Qiuci is near the Flame Mountain, Hong Haier is practicing there, and Princess Tiefan has been helping her son to practice. Of course, because of Hon Hai's samadhi, Princess Tiefan had an affair with Grandfather Lao Jun..