Looking for any information on my maternal grandfather, Joseph Kupka. At the time of my mother's birth in 1926, he was 42 years old and living in Chicago. He was married to Antonie Dolejs. Any info on her would be of value also. Antonie Dolejs died in April 1926 due to complications in the birth of my mother, Elsie Kupka. Both were from Czechoslovakia. They lived at 1515 W. 18th Place in Chicago.