A branch of my Vance line in Columbia county had two daughters of the same generation as Sarah's who married Everitts (Moses Everitt and Enoch Everitt). Most of my Vances from Columbia county are buried in McHenry Cemetery as well. I'm thinking those Everitt men were likely brothers or cousins of Sarah's.

I can't get the Columbia County Historical and Genealogical society's website to work for searches but if you haven't contacted them yet they may very well have indexed birth, death, or marriage notices in local newspapers that would help, etc. Wills on file for Everitts at the Columbia County courthouse might also mention Sarah and connections to her.

Some partial clues: the book "Genealogical and Biographical Annals of Northumberland County, Pennsylvania" by J.L. Floyd in 1911 has a biography of the Columbia County twins Enos and Enoch Everitt at this link http://books.google.com/books?id=jtIwAQAAMAAJ&pg=PA418&a...; I have quoted from it below. Often these biographies have small mistakes and it's very possible (but not proven obviously) that the "Sarah, Mrs. John Wells" should be "Mrs John WELSH":

"EVERITT The name Everitt was for over forty vears closely associated with business interests in Watsontown where Enos and Enoch Everitt twin brothers were engaged in general merchandising for many years were foremost in the organization of the Farmers National Bank and otherwise filled a useful place in the welfare and advancement of the community They were born in December 1829 in Columbia county Pa sons of James Everitt The father was born in Easton Northampton Co Pa where he married a member of a substantial family of that county a woman of energetic disposition and noble character They came to Columbia county after several children had been born to them and there followed farming Their family was a large one viz: Andrew, William, Moses, Enos and Enoch twins, Hiram who was the youngest; Elizabeth, Mrs Long; Sarah, Mrs John Wells; Martha, Mary who died out West, Susan who married, Lucy, Mrs Finas Young. ENOS EVERITT spent his early life in his native county In 1861 he and his twin brother Enoch came to Watsontown Northumberland county and embarked in the mercantile business on a humble scale in a stone house which stood along the canal By close application to business and excellent..." [and so on with more on Enos and Enoch].

I have from a different site (http://www.mywatsontown.com/?page_id=24) that Enos and Enoch's parents were named James and Mary Everitt.

It's only a possible link to your Sarah I'm afraid but it might give you some areas to investigate.

Dave Vance