靖康の変
The father of the princess was Emperor Gaozong of Song (June 12, 1107 – November 9, 1187), born Zhao Gou, was the tenth emperor of the Song Dynasty of China, and the first emperor of the Southern Song. He reigned from 1127 to 1162. He fled south after the Jurchens overran Kaifeng in the Jingkang Incident of the Jin–Song wars, hence the beginning of the Southern Song dynasty 1127–1279. Gaozong re-established his seat of government in Lin'an (; today's Hangzhou).