Kazimirowski studied painting at the Kraków Academy of Fine Arts 1892–1897. He continued his studies in Munich, Paris and Rome.[2] After World War I, he moved from Kraków to Vilnius. He taught at the Vilnius Teacher Training Institute and worked on theatrical design in Vilnius. He painted mostly landscapes and portraits.
Kazimirowski's Divine Mercy was first shown in public at the Easter ceremonies of 25–28 April 1934, and the first Mass with the Divine Mercy image was celebrated by Rev. Michael Sopoćko at the Gate of Dawn church in Vilnius, on 28 April 1935 the second Easter Sunday, long before the Vatican approved the term Divine Mercy Sunday in 2000.[3]
Most of Kazimirowski's works were lost in World War II.[2]