The only other thing I can suggest is contacting some of the submitters on the familysearch.com site. Particularly the one who put in John Henderson Warkins birth record, as it shows both wives. She knew the name Netty Breeden so maybe she'd know more about their children. I looked at the Illinois State Archives. Doing a global search, it came up with matches for the last name Warkins as Civil War participants and Warkins deaths in the death index. Joan in Illinois