Born 15 February 1920 to a Czech family in Mirohošť (Mirogoshcha), Volhynia (then part of Poland). When the region was liberated in 1944 Gregor joined the First Czechoslovak Tank Brigade in the USSR. As a member of the 3rd Tank Battalion he fell in combat on 30 April 1945 during the battle to liberate Ostrava. He is commemorated in the name of a street in the city.
