This article is about the princely peerage of Miankai. For the prince who held the similarly named title "Prince Dun of the Second Rank" (敦郡王), see Yun'e.
Prince Dun of the First Rank, or simply Prince Dun, was the title of a princely peerage used in China during the Manchu-led Qing dynasty (1644–1912). As the Prince Dun 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 Miankai (綿愷; 1795–1838), the Jiaqing Emperor's third son, who was made "Prince Dun of the First Rank" in 1821. The title was passed down over four generations and held by five persons.
Miankai (綿愷; 1795–1838), the Jiaqing Emperor's third son, made a junwang (second-rank prince) in 1819, promoted to qinwang (first-rank prince) in 1821 under the title "Prince Dun of the First Rank", demoted to junwang in 1827 but restored as qinwang in 1828, demoted to junwang again in 1838, posthumously restored as qinwang in 1838 and honoured as Prince Dunke of the First Rank (惇恪親王)
Yizuan (奕纘; 1818–1821), Miankai's eldest son, held the title of a buru bafen fuguo gong, posthumously honoured as a beile
Yicong (1831–1889), the Daoguang Emperor's fifth son and Miankai's adopted son, initially a junwang, demoted to beile, then restored as a junwang in 1856 and promoted to qinwang in 1860, posthumously honoured as Prince Dunqin of the First Rank (惇勤親王)
Puxiu (溥修; 1896–1956), Zailian's second son and Zaijin's adopted son, held the title of a second class zhenguo jiangjun from 1896 to 1915
Zaiyi (1856–1923), Yicong's fifth son, adopted by Yizhi (奕誌; 1827–1850) into the Prince Rui peerage, held the title "Prince Duan of the Second Rank" (端郡王) from 1894 to 1900
