Given name: Stefan Family name: Keller

Higher education, a banker, since November 1940 worked in the Bank Dyskontowy, in the ghetto he worked as a volunteer in the Joint (American Jewish Joint Distribution Committee), on 12 August 1942 crossed to the Polish side, in hiding in Warsaw and villages, after the war in Lodz as Antoni Kornatowski, in the ghetto and on the 'Aryan side' with his wife and daughter.