I don't know the exact reason Fredonia and her two sons, John R (b 1862) and Benjamin Block (b 12-20-1863)Caudle came to Illinois, but her parents Daniel and Hester Alexander O'Hara and family had already arrived here before 1858, their youngest son Frank was listed on the 1870 Census as being 12 years old and born in Illinois.
I'm assuming Fredonia's husband was maybe killed in the Civil War!
Which one of the two brothers are you descended from????
Charlotte Dalton Burd