Ivan Klajn was born in 1937.
Hugo Klajn was born on September 30, 1894, in Vukovar, Austro-Hungary [now Croatia].
Hugo Klajn died on December 2, 1981, in Belgrade, Serbia, Yugoslavia.
Rihard Klajn died on May 18, 1997, in Belgrade, Serbia, Yugoslavia.
Ivan Born was born in 1778.
Ivan Eland was born in 1958.
Ivan Shakespeare was born in 1952.
Ivan Apostolov was born in 1847.
Ivan Pregelj was born in 1883.
Ivan Padovec was born in 1800.
Ivan Tuparov was born in 1959.
Ivan Nevmerzhitski was born in 1984.
Ivan Gubijan was born in 1923.