Hello blaznicky
I am probably connected to your family, my great grandmother was Rosalie Lysak born in Bohemia from the Brumov_Bylnice area. Rosalie was born Nov 29, 1890 and immigrated May 4, 1913 and married Frank Foytik May 20th 1913. The family settled in Phillips Wisconsin where they had 12 children. They did live at one time in Chicago IL.
The only family relation I have for Rosalie is her father Martin Lysak.
I don't know how many siblings she had, hoping maybe you have found more info on Lysak family.