Witold Bayer was born on 9 October 1906 in Warsaw, where he lived during World War II. Son of Edgar and Adela (née Bober). In his flat, he hid a teacher of Jewish origin from Łódź, and provided material aid to Goldka Goldfarb, Gamsza Abram Wielikowski and Abraham Mordka Wagner. Witold passed away on 31 May 1992 in Warsaw.