Konstantin Ushinsky was born in 1824.
Konstantin Shabanov was born in 1989.
Konstantin Sarsania was born on 1968-06-11.
Marc-Konstantin Steifensand was born on 1966-05-14.
Pavel Tretyakov was born on December 27, 1832.
Konstantin Vrotsos was born on December 5, 1991, in Athens, Greece.
Konstantin Ushinsky died in 1871.
Konstantin Shaforenko was born in 1963.
Konstantin Chuychenko was born in 1965.
Konstantin Vaginov was born in 1899.
Konstantin Leontiev was born in 1831.
Konstantin Vasilyev was born in 1942.
Konstantin Sharovarov was born in 1964.
Konstantin Budkevich was born in 1867.
Konstantin Bozveliev was born in 1862.
Konstantin Syomin was born in 1980.
Konstantin Chistyakov was born in 1970.
Konstantin Rodko was born in 1908.