I was born and raised in Keene, Cheshire, NH. I noted that your request contained a misspelling of "Swanzey." that may or may not have sent one or more searches off-track. "The History of Swanzey records that the Sarah page married him there. (Under the Page family) but it does not list his state of origin. Vital records of Keene NH lists Ephraim and Sarah and children born there."
I lived less than a mile from "Matthews Road" [h two T's] and may not be of help. However, there are at least THREE Swanzeys: North Swanzey (near the airport and Wilson Pond), West Swanzey where there once was and still might be a woolen mill... and Swanzey Center, Home of "The Old Homestead" outdoor play. Wish I could be of more help.