Prince John Constantinovich of Russia
Russian princeDied when: 32 years 13 days (384 months)
Star Sign: Cancer
Prince Ioann Konstantinovich of Russia (Russian: Иоанн Константинович; 5 July 1886 – 18 July 1918), sometimes also known as Prince John, Prince Ivan or Prince Johan, was the eldest son of Grand Duke Konstantin Konstantinovich of Russia by his wife, Yelizaveta Mavrikievna, née Princess Elisabeth of Saxe-Altenburg.
He was described by contemporaries as a gentle, religious person, nicknamed "Ioannchik" by his relatives.