Prince Yi (怡)
Prince Yi of the First Rank (Manchu: ; "hošoi urgun cin wang"), or simply Prince Yi, was the title of a princely peerage used in China during the Manchu-led Qing dynasty (1644–1912). It was also one of the 12 "iron-cap" princely peerages in the Qing dynasty, which meant that the title could be passed down without being downgraded. The first bearer of the title was Yinxiang (1686–1730), the 13th son of the Kangxi Emperor. He was awarded the title by his fourth brother, the Yongzheng Emperor, who succeeded their father. The title was passed down over  seven generations, with a brief interruption in 1861. Zaiyuan (1816–1861), the sixth Prince Yi, was ousted from power in the Xinyou Coup of 1861 and forced to commit suicide. Three years later, Zaiyuan's cousin, Zaidun (1827–1890), became the seventh Prince Yi. The title was then passed down for another two generations to Yuqi (1900–1948) before it was finally abolished after the fall of the Qing dynasty.