Rone family

My RONE family originated in NC with my 3x great grandmother Elizabeth Rone, born 1799. It's possible she never married, but had two sons Isaac Singleton Rone and John Shepard Rone. The families eventually moved to Mississippi by the 1870's. I believe she may have had a sister Mary who married Henry Hancock, as a child of this Hancock also came to MS and married the brother of John Shepard's wife, Matilda Plyler. I'm looking to firmly connect my Elizabeth with Mary and find her other siblings and parents. Thanks in advance.