Mary Magdelene Chastain

Hi, I am new to this site.I have information back to Pierre, through Pierre Jr, John, Elijah, Maxwell, Larkin who was my great GF.I have discovered another Chastain link through my maternal grandmother and could use some help tracking it down! My 6th GGF was Thomas Prewitt or Pruitt who married Mary Magdelene Chastain in 1710 in Henrico County, VA.Mary was supposedly born in 1696 and died in 1760 - any thoughts on this Mary?