Prince of Jin
In 907, Zhu forced Emperor Zhaozong's son and successor Emperor Ai to yield the throne to him, ending Tang and starting a new Later Liang with him as its Emperor Taizu. Li Keyong, who carried the Tang-bestowed title of Prince of Jin, refused to recognize the new Later Liang emperor (as did several other major warlords — Yang Wo the Prince of Hongnong, Li Maozhen the Prince of Qi, and Wang Jian the Prince of Shu) and continued to use the Tang era name "Tianyou". In effect, however, he was the ruler of his own state of Jin by this point. In 908, Li Keyong died and was succeeded by his son Li Cunxu as the Prince of Jin. Li Cunshen continued to serve under Li Cunxu.