It is not a bother for me if I can find anything on the internet or in these histories. You have probably done all that by now though. Have you tried searching FindaGrave just by their names in NH, Merrimack County. There are some Severances, Mills, and Keninston listed. Is that the correct spelling or might it be Keniston. I know there are Kenistons up that way. I would be willing to bet she meant Lakeside Cemetery. There are some Kenistons and Severances listed in that one in this history book.
What do you mean "Ever play telephone?"
Give me a few names and I will see what I can find too.