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.
Southern Tang
The last ruler, Li Yu (Li Houzhu), took over the state upon the death of his father in 961. The Song dynasty had conquered the northern part of the state located in Huainan, and thus Li Yu reigned no longer as an emperor but as the Ruler of the State of Jiangnan (Jiangnan guozhu 江南國主). Li Yu managed to maintain a semi-independent status of vassal of the Song but had to finally surrender after fighting for almost a year in 975. He was taken to the Song capital in Kaifeng where he offered his formal surrender to the Song emperor in early 976.