No one holds anyone to a specific date, but even a century is a help, with trying to figure where to look., so include that, at least..... apparently these people got here around Penn's arrival time? There are no Clibborns in THE HISTORY OF CHESTER COUNTY, by Futhey and Cope....none in early tax lists, etc. There are none in the New Garden MM marriage records, which start in 1704, and there are none included in area wills.....none included in early Court records, up to 1710. IMMIGRATION OF THE IRISH QUAKERS INTO PA, by Myers includes Wm and Ann, but at a much earlier time.... "John Miller born at Breckenbrough, Kerbywilk Parish in Yorkshire, in 1633 married Ann, dau of Wm Clibborn, who was born in 1630, at Cowley, in County Durham, England. Their son, John, emigrated to PA in 1709, and settled in New Garden twp....died in 1714....his widow died in 1730. " Thus, it doesn't appear likely that John and Ann Clibborn emigrated, and you're a generation off with those that helped establish the New Garden meeting..(these were the Miillers, not the Clibborns.) " I know you are descended from those people."...sorry, but I'm not related to Millers or Clibborns. S. " Dates? We're talking about the people who founded the Irish Quaker community in New Garden here, Sandra. And we're talking Miller's to boot. I know you are descended from those people. On top of that, the information on Ann Clibborn's father is so inconsistent it's hard to get you dates. Late 17th century is about the best I can do. She married John Miller, one of the three Miller's who helped found New Garden."