Wojciechowski was born in the southern Polish city of Jasło, some 144 kilometres east of Cracow, one of the three children of Andrzej Wojciechowski, a railway employee, and his wife Marja Wojciechowska. His father died when Wojciechowski was five-years' old. Owing to the efforts of his mother struggling single-handedly to support the family he was enrolled at the age of 8 at the Salesian-run boarding school for poor children located in the Rakowicka № 27 in Cracow. At school he was described as a vivacious and content child. In 1916 he entered a similar Silesian institution for older children located at the city ofOświęcim where in 1920 he expressed the wish to enter the Salesiannovitiate in Klecza Dolna. Accepted by the Salesians of Don Bosco, he professed his religious vows on 2 October 1921. Subsequently, he continued his studies at a Salesian academy in Cracow, and upon their completion was given a position at a minor seminary of the Salesians at Ląd in central Poland as an assistant tutor in mathematics and a singing-teacher. He also taught music and singing at Salesian educational institutes at, Warsaw, Aleksandrów Kujawski, and in Oświęcim. He began his theological studies at Cracow in 1930, and upon their completion received holy orders at the hands of Bishop Stanisław Rospond on 19 May 1935. He then taught for a year at a Salesian minor seminary in near Stryj in Poland, on his return to Cracow taking on the duties of a catechist in elementary schools and those of a director of an oratorium and patron of Catholic youth organizations. During the September Campaign Wojciechowski remained in Cracow rendering assistance to persons displaced by the hostilities of war. When the Nazis allowed the opening of schools in the General Government in November 1939, he returned to his school work. In the evening hours of Friday, 23 May 1941, Wojciechowski together with eleven of his Salesian confrères, including ten priests and one lay friar was arrested by the Gestapo at the house in the Konfederacka № 6 in the Dębniki district of Cracow and imprisoned in the Montelupich. At the Montelupich Prison Wojciechowski was informed that the reason for his arrest was his educational work fanning the patriotic sentiment among the Polish youth. After a detention of 34 days in duration at Montelupich, Wojciechowski was deported on 26 June 1941 to the nearby Auschwitzconcentration camp, 66 km away. On arrival at the camp he received the inmate number 17342. The next day, 27 June 1941, Wojciechowski was impressed into a disciplinary work detail, the so-called Strafkompanieconsisting of 12 prisoners engaged in gruelling excavation of the gravel yard that bordered on the concentration camp the now famous historic site known in Polish as Żwirowisko and in German as Kiesplatz. During the morning shift of that day the supervising kapo broke Wojciechowski's teeth with a single blow from a shovel handle and separately injured his head with a lash from a riding crop. He had apparently attracted the attention of the kapo by his athletic and muscular build, which incited jealousy. This was also the time frame within which two of Wojciechowski's fellow-Salesians, Ignacy Dobiasz and Jan Świerc, were murdered and removed to crematorium. During the lunch break Wojciechowski was unable to eat on account of the sustained wounds. On the afternoon shift he was beaten again and when he complained he was thrown into a previously excavated gravel pit, told to lie down next to another Salesian friar, Franciszek Harazim, whom he observed lying at the bottom of the pit in a state of unconsciousness, and together with him was suffocated to death by having a single wooden pole thrown across both his and Harazim's necks, which was then weighed down by the bodies of two prisoner functionaries a kapo and a barrack leader who stood on the pole at either end. Wojciechowski was 36-years' old. Kazimierz Wojciechowski is currently one of the 122 Polish martyrs of the Second World War who are included in the beatification process initiated in 1994, whose first beatification session was held in Warsaw in 2003. A person nominated for beatification receives within the Roman Catholic Church the title of "Servant of God"; once he is actually beatified he is accorded the title of "Venerable" and "Blessed", which are a prerequisite for sainthood conferred in a process known as canonization. In all, over 140 Polish Salesian friars found themselves imprisoned, deported to concentration camps, or exiled from the country during the Second World War.
