King of Wu
The King of Wu or  Prince of Wu was a title referring to Chinese rulers of the area originally controlled by the Gou Wu tribes around Wuxi on the lower Yangtze, generally known as the Wu region. The title wang is written identically in Chinese, but it is common in English to distinguish between the scions of the imperial dynasties (translated "prince") and the dynasties of independent lords (translated "king"). History
According to traditional Chinese historians, the title was first used by two refugee princes from Zhou who settled  among the barbarian Wu. Their state of Wu had its capital first at Meili (traditionally held to be Meicun in modern Wuxi), then at Gusu (within modern Suzhou) and Helu City (present-day Suzhou). It was established independently but became a vassal to the Zhou dynasty after its conquest of the Shang dynasty. It became independent again during the Spring and Autumn period, but was annexed by the Yue state in 473 BC. The title was somewhat infelicitous for the early Kings of the Han dynasty, who were quite autonomous and powerful before being reined in after an unsuccessful revolt in 154 BC. Therefore, the early princes are sometimes counted as "kings" as well. After the rebellion, the Wuyue region was divided up among different princes and the title was abolished until it was recreated during the Three Kingdoms era when Cao Cao recommended Sun Ce to be Marquis of Wu in 197. Sun Quan was created as King of Wu in 220 as a vassal ruler of Cao Wei. He later declared himself an independent king in 222 and proclaimed as emperor of the Eastern Wu in 229. The Prince of Wu title was recreated during the Tang dynasty for 14th son of Emperor Gaozu, Li Yuangui. Li Ke was created as Prince of Wu in 636. The title was suspended in 653 when Li Ke ordered to commit suicide. He was found innocent in 705, and his son Li Kun was posthumously honored as Prince of Wu. The title remained suspended until near the end of Tang dynasty, Yang Xingmi was created Prince of Wu in 902, and his successor kept the Wu title even after end of Tang in 907. They remained independent as Southern Wu as King of Wu until Yang Pu declared himself an emperor. During the Red Turban Rebellion, Zhu Yuanzhang declared himself King of Wu during the late phases of against the Yuan, just prior to his establishment of the Ming dynasty. His fifth son, Zhu Su, received the title as Prince of Wu after he became emperor in 1370. The title was vacated in 1378 after Zhu Su's title changed to Prince of Zhou. In 1399, Zhu Yuntong was recreated as Prince of Wu, but he was strip of the title after Jianwen Emperor was deposed by Yongle Emperor due to his relationship. The title became extinct since then. Titleholders

Wu state
Shoumeng (585–561 BC)
Zhufan (560–548 BC)
Yuji (547–544 BC)
Yumei (543–527 BC)
Liao (526–515 BC)
Helü (515–496 BC), cousin, rose to power via assassination, employed Sun Tzu
Fuchai (495–473 BC)

Western Han dynasty
Liu Pi (195–154 BC) led the Rebellion of the Seven States

Eastern Wu dynasty
Sun Quan (220–229), vassal king of Cao Wei between 220 and 222, and independent afterward. Tang dynasty
Li Yuangui (625–636), 14th son of Emperor Gaozu, later Prince of Huo. Li Ke (636–653), 3rd son of Emperor Taizong, also a crown prince, famed for rebellion and was ordered to commit suicide. Yang Xingmi (852–905), created in 902 near the end of Tang dynasty, his successor later found the Southern Wu kingdom. Yang Wu dynasty
Yang Wo (886–908), eldest son of Yang Xingmi. Yang Longyan (897–920), second son of Yang Xingmi. Yang Pu (900–938), fourth son of Yang Xingmi, declared himself emperor. Ming dynasty
Zhu Yuanzhang (1364–1368)
Zhu Su (1361–1425), 5th son of Hongwu Emperor, created as Prince of Wu in 1370 and changed to Prince of Zhou in 1378. Zhu Yuntong (1378–1402), 3rd son of Zhu Biao, grandson of Hongwu Emperor, brother of Jianwen Emperor, created as Prince of Wu in 1399. See also
 Wang, as a title
 Wu Kingdom (Han dynasty)
 Prince of Huainan
 Wu
 Eastern Wu

Chinese royal titles
Zhou dynasty
Eastern Wu
Han dynasty
Ming dynasty
Chinese princes