Iron-cap Prince
12 hereditary Qing dynasty's prince titles passing down without downgrading; 8 were by merit awarded to sons of emperor when Qing dynasty first established ; remaining four granted in the middle to late period
Prince Su
fourth of the eight hereditary Iron-cap Princes, a noble title awarded by merits to Qing emperor's sons or brothers
Prince Yu
third of the eight hereditary Iron-cap Princes, a noble title awarded by merits to Qing emperor's sons or brothers
Prince Li
first of the eight hereditary Iron-cap Princes, a noble title awarded by merits to Qing emperor's sons or brothers