It's me again. I have from family sources the name of Thomas Dvorak as the father of Nathan Dvorak who married Louisa Semin [1892] the daughter of Jozef and Mary (Kaderabek)Semin. Would someone with access to 1880 and 1890 census records look for the two families in Butler County, NE? 1) Thomas Dvorak (wife unknown) 2)Jozef and Mary (Kaderabek) Semin