My maternal GF was Albert George Kmiotek. He also had a sister Regina Dunaj Drajewski nee Kmiotek.
My maternal GM was Karolina Kmiotek nee Masur. Her sister Mary married Albert Ochab. Also, her other sister Helen, adopted two young girls, Sophia and Helen, that were somehow from the Kmiotek/Dunaj family. The Ochab's changed to Ohab's in that timeframe.
Everybody was in the Chicago area. Chechly is where I thought they were from, but got no leads back there.
Please feel free to contact me (z_zin at earthlink.net) and I can share what I have.