My wife is a Plumer who's grandfather and great-great grand father have ties to Portmouth and New Castle, NH. (Rev. Charles A. Plumer and Dr. Herbert Edric Plumer). I also checked Perley's book and found only minor references to Albert Plumer, but I'm not confident with the link. Certainly go w/ Harlow Chandler's advice. Try also the Portsmouth Public Library. They have a reference librarian who works wonders. We have made several inquiries, and she return the info. quickly.