Prince Yu of the Second Rank, or simply Prince Yu, was the title of a princely peerage used in China during the Manchu-led Qing dynasty (1644–1912). As the Prince Yu peerage was not awarded "iron-cap" status, this meant that each successive bearer of the title would normally start off with a title downgraded by one rank vis-à-vis that held by his predecessor. However, the title would generally not be downgraded to any lower than a feng'en fuguo gong except under special circumstances.
The first bearer of the title was Yunxu (允禑; 1693–1731), the 15th son of the Kangxi Emperor. In 1730, Yunxu was granted the title "Prince Cheng of the Second Rank" by the Qianlong Emperor. The title was passed down over seven generations and held by seven persons.
Yunxu (允禑; 1693–1731), the Kangxi Emperor's 15th son, initially a beile, promoted to junwang under the title "Prince Yu of the Second Rank" in 1730, posthumously honoured as Prince Yuke of the Second Rank (愉恪郡王)
Hongqing (弘慶; 1724–1769), Yunxu's third son, held the title Prince Yu of the Second Rank from 1731 to 1769, posthumously honoured as Prince Yugong of the Second Rank (愉恭郡王)
Yongjian (永珔; 1766–1820), Hongqing's eldest son, held the title of a beile from 1770 to 1820
Mianxiu (綿岫; 1782–1850), Yongjian's eldest son, made a zhenguo jiangjun in 1802, held the title of a beizi from 1821 to 1850
Yisu (奕橚; 1808–1866), Mianxiu's eldest son, made a second class fuguo jiangjun in 1829, held the title of a feng'en zhenguo gong from 1850 to 1866
Zaixiu (載烋), Yisu's eldest son, held the title of a first class fuguo jiangjun from 1857 to 1859, had no male heir
Zaican (載璨; 1838–1885), Yisu's second son, made a fuguo jiangjun in 1857, held the title of a feng'en fuguo gong from 1866 to 1885
Yicheng (奕棖), Mianxiu's third son, held the title of a second class fuguo jiangjun from 1857 to 1887
Zailin (載霖), Yicheng's eldest son, held the title of a fengguo jiangjun from 1868 to 1889, had no male heir
Zaiguang (載光), Yicheng's fourth son, held the title of a fengguo jiangjun from 1877
Pupei (溥培), Zaiguang's eldest son, held the title of a feng'en jiangjun from 1906
Zaiyan (載燕), Yicheng's sixth son, held the title of a fengguo jiangjun from 1877 to 1911
Puping (溥坪), Zaiyan's eldest son, held the title of a feng'en jiangjun from 1906
Yiqiu (奕楸), Mianxiu's fourth son, held the title of a second class fuguo jiangjun from 1857 to 1864, had no male heir
Yigen (奕根), Mianxiu's sixth son, held the title of a feng'en jiangjun from 1857 to 1861, had no male heir
Yi'nan (奕楠), Mianxiu's eighth son, held the title of a feng'en jiangjun from 1868 to 1884
Yilei (奕櫑), Mianxiu's ninth son, held the title of a feng'en jiangjun from 1868 to 1870, had no male heir
Zaizhuang (載莊), Yi'nan's second son and Yilei's adopted son, held the title of a feng'en jiangjun (inherited from Yi'nan) from 1890 and another feng'en jiangjun title (inherited from Yilei) from 1902
Mianjun (綿峻), Yongjian's second son, held the title of a zhenguo jiangjun from 1802 to 1843
Yizhang (奕樟), Mianjun's second son, held the title of a third class fuguo jiangjun from 1843 to 1884
Zaiwen (載雯), Yizhang's eldest son, held the title of a fengguo jiangjun from 1878 to 1883, had no male heir
Mianqi (綿岐), Yongjian's fifth son, held the title of a fuguo jiangjun from 1812 to 1831
Yiqian (奕棈), Mianqi's fourth son, held the title of a fengguo jiangjun from 1831 to 1890, had no male heir
Miankun (綿崑; 1792–1831), Yongjian's sixth son, held the title of a second class zhenguo jiangjun from 1812 to 1831
Yidong (奕棟; 1812–1872), Miankun's eldest son, held the title of a fuguo jiangjun from 1832 to 1872
Zaisou (載搜), Yidong's eldest son, held the title of a fengguo jiangjun from 1857 to 1859, stripped of his title in 1859
Zaizang (載臧), Yidong's second son, held the title of a fengguo jiangjun from 1873 to 1875, had no male heir
Yitong (奕桶), Miankun's third son, held the title of a third class fuguo jiangjun from 1844 to 1862
Mianlun (綿崙), Yongjian's seventh son, held the title of a first class fuguo jiangjun from 1812 to 1840
Yijie (奕傑), Mianlun's eldest son, held the title of a fengguo jiangjun from 1836 to 1878
Zaizhao (載照), Yijie's second son, held the title of a feng'en jiangjun from 1878
Miangang (綿崗), Yongjian's eighth son, held the title of a first class fuguo jiangjun from 1812 to 1841
Yifang (奕芳), Miangang's second son, held the title of a fengguo jiangjun from 1841 to 1844, had no male heir
Mianfeng (綿峯), Yongjian's ninth son, held the title of a fuguo jiangjun from 1821 to 1847
Yibin (奕彬), Mianfeng's eldest son, held the title of a fengguo jiangjun from 1847 to 1888
Mianlong (綿巃; 1806–1873), Yongjian's tenth son, held the title of a fuguo jiangjun from 1826 to 1873
Yiqiao (奕樵; 1838–1875), Mianlong's eldest son, held the title of a fengguo jiangjun from 1873 to 1875
Zaixia (載霞; 1860–1922), Yiqiao's eldest son, held the title of a feng'en jiangjun from 1875 to 1882
Pusu (溥宿), Zaixia's eldest son, held the title of a feng'en jiangjun
Puzhao (溥釗; 1885–1937), Zaixia's third son and Zaican's adopted son, held the title of a feng'en fuguo gong from 1885 to 1937
Yuchun (毓純; 1905–1906), Puzhao's son
Yongle (永勒), Hongqing's second son, held the title of a feng'en jiangjun from 1790 to 1799, had no male heir
Hongfu (弘富), Yunxu's fourth son, held the title of a third class zhenguo jiangjun from 1749 to 1783
Yongbo (永浡), Hongfu's third son, held the title of a fuguo jiangjun from 1784 to 1818
Mianfen (綿鈖), Yongbo's eldest son, held the title of a feng'en jiangjun from 1790 to 1818, held the title of a fengguo jiangjun from 1818 to 1821
Yiyuan (奕元), Mianfen's eldest son, held the title of a feng'en jiangjun from 1821 to 1851
Zaiyu (載裕), Yiyuan's eldest son, held the title of a feng'en jiangjun from 1858 to 1862, stripped of his title in 1862
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