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.
Tang poetry
After the official fall of the Tang dynasty in 907, some members of its ruling house of Li managed to find refuge in the south of China, where their descendants founded the Southern Tang dynasty in the year 937. This dynasty continued many of the traditions of the former great Tang dynasty, including poetry, until its official fall in 975, when its ruler, Li Yu, was taken into captivity. Importantly for the history of poetry, Li survived another three years as a prisoner of the Song dynasty, and during this time composed some of his best known works. Thus, including this "afterglow of the T'ang dynasty", the final date for the Tang Poetry era can be considered to be at the death of Li Yu, in 978.