Steve, My chart is mostly my direct line. I didn't see your people on it. I did find them in a book by Jesse Mabel Warburton (nee Margerum). It's name: "The Margerum Family of Bucks County PA." Your First ancestor you mentioned, Ben Margerum Married Mary Ann Yerkes. His father was Thomas who married Rachel Woolard(or Willard, or Woller). Thomas' father was John who married Catherine Cornish on 11/8/1769. John's father was Richard who married 1st wife Mary Lucas. Richard's father was Henry who married 2nd wife Jane Bayless Riggs. Henry immigrated to USA from Cheverell,Wiltshire,England. He and his first wife arrived aboard Bristol Merchant, in Delaware River, 1682. You can borrow this book throught the library exchange. It has a lot more info than I've included. E-mail me if you have any questions. gretchen@silverstar.com