Kendziorski was born in what is now western Poland. At the time of his birth, this was the Province of Posen in the Kingdom of Prussia, within the German Empire.[1] He received a primary school education in his native Poland and attended evening school classes after moving to Milwaukee. From 1928 to 1930 he worked as a real estate broker, then worked as a machinist.[2]
Kendziorski served in the Senate until his death in September 1974. He maintained a near-perfect voting record in the Senate until February 1973, when he had to enter a nursing home due to poor health. He was taken from the nursing home to a Milwaukee hospital after suffering a pulmonary embolism that migrated from his leg into his lung. He died September 26, 1974.[5]