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.
Liu Rengong
Liu Rengong (劉仁恭) (died 914) was a warlord late in the Chinese dynasty Tang Dynasty who controlled Lulong Circuit (盧龍, headquartered in modern Beijing) from 895 (when his one-time lord Li Keyong conquered Lulong and left him in charge of it) to 907 (when he was overthrown by his son Liu Shouguang and put under house arrest). He was initially a Lulong officer, but later fled to Li Keyong's Hedong Circuit (河東, headquartered in modern Taiyuan, Shanxi). After Li conquered Lulong and left him in charge, he turned against Li and became an independent warlord, although at times he and Li would still act in concert. His domain later became the basis of the Five Dynasties and Ten Kingdoms period state Yan that Liu Shouguang established. In 913, however, Li Keyong's son and successor Li Cunxu the Prince of Jin conquered Yan and captured both Liu Shouguang and Liu Rengong; he put them to death the next year.