The Merriam’s are the family for whom I have the oldest records, but the least in digital form.
The Merriam Family Paper’s site lists generations of the family back to 1455 when they were living in Boughton Monchelsea in Kent. Sometime between 1600 and 1640 the family moved out to Massachusetts where they lived near Concord for several generations. In the mid 19th century Levi Parsons Merriam returned to the U.K. where he founded the plastics company British Xylonite. His son, Charles Pierce Merriam, ran the business after him.