The Duke of Ding'an is a nobleman who secured a marriage between his third daughter and Zhou Jingyun by shamelessly begging the previous emperor to act as matchmaker. After his daughter's death, he hoped for another marriage alliance. He may cause trouble upon learning of Zhou Jingyun's remarriage, as Madam of Dongyang worries about his reaction. He does not appear directly but is a source of political and social pressure.
