Emperor Xuanzong of Tang

Emperor Xuanzong of Tang , also commonly known as Emperor Ming of Tang, personal name Li Longji, also known as Wu Longji from 690 to 705, was the seventh emperor of the Tang dynasty in China, reigning from 712 to 756. His reign of 43 years was the longest during the Tang Dynasty. In the early half of his reign he was a diligent and astute ruler. Ably assisted by capable chancellors like Yao Chong, Song Jing and Zhang Yue, he was credited with bringing Tang China to a pinnacle of culture and power.

Li Longji was born at the Tang Dynasty eastern capital Luoyang in 685, during the first reign of his father Emperor Ruizong but at that time, Emperor Ruizongs mother Empress Dowager Wu , not Emperor Ruizong, was in actual control of power as empress dowager and regent. Li Longji was the third son of Emperor Ruizong, and his mother was Emperor Ruizongs concubine Consort Dou. In 687, as the emperors son, he was created the Prince of Chu. It was said that he was handsome as a child, and was talented in music. He had two older brothers Li Chengqi, born of Emperor Ruizongs wife Empress Liu, and Li Chengyi , as well as three younger brothers Li Longfan , Li Longye , and Li Longti .

Source: Wikipedia