Families

I have a couple of questions. In my Rigg files, (some of which you helped build) I show John B. Rigg married to 3 ladies, Allie Perry, Julia Mobley, and Barbara Ingram Edmonston. In the updated marriages file per your site, It shows John B. Rigg married Julia Maltby (have some Maltby’s in my Barker line in Brown Co), and a John R. Rigg married a Mrs Barbara Ingrams Lowens. Is there anyway to find out if 1. the Julia’s are the same and which is the correct spelling. 2. Is John R. and John B. the same and which is it if so. 3. Was Barbara married twice before John? A Lowens and an Edmonston?