I'm hoping to find information on my great-grandfather, Joseph Crnkovic (Sankovich), estimated year of birth 1864. His naturalization paper indicates he came from Ravna Gora, Austria (modern day Croatia). His father's name *may* have been Mathew.
The naturalization paper stated he immigrated to America in 1899 on the ship La Savoie. However, my research on La Savoie shows its maiden voyage was 1901.
He married Barbara Gorshe (?) in 1904 in Madison County, IL.
I have ran into all sorts of roadblocks with this one. Any ideas on where to go next would be greatly appreciated.