Hi Pat, As you know, Ostrowski is a very common Polish surname.There were approximately 39,000 adults with that surname in Poland in 1990. I found some U.S. records for a John Ostrowski from KOWAL Russia/Poland, who may be the subject of your search.A way to tie him together with the rest of the family would be through obituaries and/or death certificates. There are U.S. census and a WW I Draft Registration Card for John. In 1920, they are indexed on Ancestry.com as John Ostrowski living at 5245 South Lincoln in Chicago Ward 29, Cook County, IL (present day zip code 60609). In 1930, they are indexed on Ancestry.com as John “Ostronski” living at 5326 South Paulina Street in Chicago, Cook County, IL (present day zip code 60609).
John Ostrowski was born in Kowal Russia/Poland on either April 17 or May 7, 1891 (died in May 1969 in Chicago, Cook County IL 60609, Social Security No. 335-01-4369).He married Mary (Gorny?) in 1916, presumably in Chicago, Cook County, IL.Mary was born in Illinois between 1896 and 1897.They had five (5) children, all born in Illinois:Henry born in 1918, Alfred born in 1919, John Jr. born 1921, Virginia born in 1923, and Eugene born in 1929.John immigrated to the U.S. between 1909 and 1910.He was naturalized a U.S. citizen between 1920 and 1930.He was employed as a laborer for Armour Meat Company at the Union Stock Yards. There is a WW I Draft Registration Card for a John Ostrowski.He was born on April 17, 1891 in Kowal, Russia/Poland.He was living with his wife at 4737 South Paulina in Chicago at the time of his registration.He was employed at the Armour Meat Company. It appears that the family remained in the “Back of the Yards” neighborhood just outside of the Union Stock Yards. I will email you copies of the documents discussed above. Best regards, Norbert