Emperor Ai of Tang
Li Zuo was born in 892, at the main palace at the Tang imperial capital Chang'an. His father Emperor Zhaozong was already emperor at that point, and he was Emperor Zhaozong's ninth son. His mother was Consort He, who had previously given birth to an older brother of his, Li Yu, Prince of De, who was Emperor Zhaozong's oldest son.
Zhou Zong
Zhou Zong (周宗), courtesy name Juntai (君太), was an official of the Chinese Five Dynasties and Ten Kingdoms period state Southern Tang. Zhou was a close associate of its founding emperor Emperor Liezu and thus was honored by Emperor Liezu (Xu Zhigao/Li Bian) and his son and successor Emperor Yuanzong (Xu Jingtong/Li Jing). His two daughters became successive empresses (known as Empress Zhou the Greater and Empress Zhou the Lesser) for Emperor Yuanzong's son and successor, Southern Tang's final emperor Li Yu (often known as Li Houzhu).