Henryk Wieliczański studied at the Faculty of Medicine at the Stefan Batory University in Vilnius. In the period of studies, he was a co-founder of Unitania – Academic Jewish Zionist and Revisionist Corporation. Unitania was established in 1926, mainly by the students of Jewish origin.After graduation in 1931, Henryk came to live in Łódź where he worked as a specialist in internal diseases at the internal diseases ward treating chest diseases at the Jewish Hospital of the Foundation named after the spouses Izrael and Leona Poznański in Łódź.
In the period of occupation, he lived in Warsaw on Sosnowa Street with his wife Teodozja Maria and daughter Zosia. In October 1942, Sara Celnik asked him for help. At that time, she hid with "Aryan papers" for the name Stefania Pabiańska but she was looking for shelter. Dr. Wieliczański told her to go to his wife who was looking for a babysitter but not to tell her about her origin. If the wife did not employ her, Sara was supposed to return to Henryk.
Teodozja Maria Wieliczańska agreed to employ Sara. After a few days, she was explained who Stefania Pabiańska was in fact. In the Wieliczańskis' house, Sara received not only material support, but also sincere care and friendship. She reported after the war that she had witnessed many times how the Wieliczańskis helped those in need.
Dr. Wieliczański was a sanitary head of the Society of Polish Syndicalists. He was also a member of the Home Army, the pseudonym "Zygmunt". He worked for the Central Toxicological Laboratory.
On 8th January 1943, he was arrested in his house and put into the Gestapo prison called Pawiak, from where he was sent to Majdanek concentration camp and then to KL Auschwitz. He survived the war and lived in Łódź, where he was a secretary of the Łódź Chamber of Physicians and Dentists. In 1972, Dr. Wieliczański was one of the witnesses at the trial of war criminals in Düsseldorf.
Sara avoided being arrested because she was not in the house at that time. She went to work to Germany where she survived the war.
