Mieczyslaw Wielicz was born on 22 December 1910 in Lublin, Lublin Governorate, Congress Poland, Russian Empire [now Lublin, Lubelskie, Poland]. He died on 10 May 1983 in Bydgoszcz, Bydgoskie, Polish People's Republic [now Bydgoszcz, Kujawsko-Pomorskie, Poland].