I have found reference to one Sarah Seyers of Oxford Township: re: Cheltenham..........being mentioned for March 1683 as holding a friends of the church Byberry meeting
Richard Wall is mentioned as part of this group....along with the George Shoemaker family
Here are some more names mentioned Joeseph Bosler is mentioned: John Harts is mentioned: John Barnes Samuel Cart Everand Bolton Evan Morris Robert Fletcher Thomas Canby Toby Leech: an Englishman (this must imply the others were not) and apparently this chap was himself baptised in 1652 in Cheltenham England and arrived in 1682 to Pennsylvania
apparently many marriages of these Friends were held at the home of Richard Wall prior to a permanent structure being built
these meetings were apparently called the Dublin Meetings
Therefore a Seyers famiy must have existed prior to 1700 in this region and are likely of Irish descent...........
the book is called Genealogy of the Shoemaker family of Cheltenham and is easy to find by googling it.