Biographical Sketch of Seneca Merrill Leave a Comment / New HampshireSENECA MERRILL, a younger brother, connected with Sherburn in business at Colebrook, where they have become wealthy, has held several county offices. One of the daughters married William B. Leavitt, a scientific man and astronomer at Grantham. Surnames:Merrill, Topics:Biography, Locations:Croydon New Hampshire, Sullivan County NH,Collection:Partridge, Dennis N. Croydon New Hampshire Genealogy. Facebook Pinterest StumbleUpon Delicious Tumblr Twitter Evernote Gmail Print Friendly Like