Born in Warsaw, Lutek Rotblat was a member of Akiba, whose underground activities he initiated in the Ghetto. Very close to his mother, they hid in a cellar together with 80 orphans, during the mass deportations.
A member of the JFO , he was responsible for buying weapons. It was his mother who nursed Arieh Wilner following his escape. Lutek fought during the Uprising and committed suicide on May 8th, 1943, along with his mother, in the bunker on Mila Street.