Lyn, I found this information on another board. I have copied the entire posting. Mary had a second marriage to James Percival. I didn't know if you want to go forward or backwards from Mary. I hope this helps.
Janine (Message follows)
Was Capt. Timothy Percival married to Mary Fuller? If so, his father was John Percival and his grandfather was James Percival. Timothy's great-grandfather was James Percival who married Mary Rainsford/Raynsford. Mary's father was Edward Raynsford, grandfather was Robert Raynsford, great-grandfather was John Rainsford, great-great-grandfather was William Rainsford, 3(great)-grandfather was Henry Rainsford, 4(great)-grandfather was John Rainsford, 5(great)-grandfather was Laurence Rainsford, 6(great)-grandfather was William Rainsford. The family must have changed the spelling from Rainsford to Raynsford. I hope this helps.