What is Prince Ioann Konstantinovich of Russia?
{{nosources|date=November 2010}} [[File:Ioann Konstantinovich of Russia.jpg|thumb|Ioann Konstantinovich of Russia]] '''Prince John Constantinovich of Russia''' ({{lang-ru|Иоанн Константиович}}) (5 July 1886 – 18 July 1918), also known as '''Prince Ioann''', '''Prince Ivan''' or '''Prince Johan,''' was the eldest son of Grand Duke Constantine Constantinovich of Russia. He was described as a [[wikt:gentle|gentle]], [[religion|religious]] person. His relatives gave him the nickname of Ioannchick. He was born at [[Saint Petersburg]], [[Russian Empire]], and was in the [[House of Romanov|House of Holstein-Gottorp-Romanov]]. He later married the [[Princess Helen of Serbia]]. {{bio-stub}} {{DEFAULTSORT:Ioann Konstantinovich of Russia}} [[Category:Russian nobility]] [[Category:1886 births]] [[Category:1918 deaths]]