Zhenduo of Cao first ruler of Cao, Zhou dynasty's client state Parents Tai Si King Wen of Zhou Children Count Tai of Cao Siblings Yu of Cheng Marquess of Feng Royal Uncle of Wey–Kang Xian of Guan Gao, Duke of Bi King Wu of Zhou Du of Cai Count of Xun Bo Yikao Chu of Huo Zai of Dan Count of Yong Zheng of Mao Xiu of Teng Count of Yuan Dan of Zhou Royal Uncle of Gao Nangong Kuo