Statistics for occurrence #1 of “Illinois” in chapter 8 of William H. Herndon, Jesse William Weik, Herndon's Lincoln: The True Story of a Great Life, Etiam in minimis major, The History and Personal Recollections of Abraham Lincoln by William H. Herndon, for twenty years his friend and Jesse William Weik:

...on, kind and considerate for those with whom she was thrown in contact. One of Miss Owens' descendants is authority for the statement that Lincoln had boasted that if Mary Owens ever returned to Illinois a second time he would marry her; that a report of this came to her ears, whereupon she left her Kentucky home with a pre-determination to show him if she met him that she was not to be caught simp...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Illinois (Illinois, United States) 6,200 258 0 0 0 user votes
Illinois (New Mexico, United States) 4 0 0 0 0 user votes
Illinois (Oregon, United States) 2 0 0 0 0 user votes
Illinois (Colorado, United States) 0 0 0 0 0 user votes
Illinois (Illinois, United States) 0 0 0 0 0 user votes
Illinois (New Mexico, United States) 0 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.