Found Robert and bunch of children including a 1yr old daughter named Annie in the 1900 Casey, KY census, no wife, indicating his first wife died about 1898-1899.
Name: James R. Edwards Spouse's Name: Annie E. Lay Event Date: 24 May 1903 Event Place: Liberty, Casey, Kentucky Indexing Project (Batch) Number: M01529-8 System Origin: Kentucky-EASy GS Film number: 1942721 Reference ID: P. 198-99
"United States Census, 1910" Event Place: North Liberty, Casey, Kentucky, US District: 36 Sheet Number and Letter: 7A Household ID: 263 Affiliate Name: The U.S. National Archives and Records Administration (NARA) Affiliate Publication Number: M1283 GS Film number: 1374483 Digital Folder Number: 004329915 Image Number: 00285 Household Gender Age Birthplace Head Robert Edwards M W 49 m Kentucky Kentucky Kentucky Wife Annie Edwards F W 40 m Kentucky Daughter Patsy Edwards F 22 Kentucky Son John Edwards M 20 Kentucky Son James Edwards M 17 Kentucky Son George Edwards M 14 Kentucky Daughter Mattie Edwards F 13 Kentucky Daughter Mollie Edwards F 7 Kentucky Son Willie Edwards M 5 Kentucky Son Archie Edwards M 3 Kentucky
United States Social Security Death Index Archie Edwards birth: 11 July 1907 death: May 1975 Casey, Kentucky
Suggestions - Get a copy of the actual marriage record and see if her parents were listed, and also look to see if she was listed as Miss or as Mrs. Get Archie's SS application and see what he put down as his mother's maiden name. Only Annie E Lay I found was born 1871 to Jackson & Sarah Lay - 1880 census. Hope this helps, Marie