HI
My 6G grandfather was James Henderson of Oakham, Ma/Salem,NY also researching what happen to James and Abigail after there marriage 1792...Found Deed Transfers in Washington County were James and Abigail sold their property in Salem in 1793.
I am planning a trip to Ogdensburg, NY / Ontario Canada towns of Prescott,,Maitland and Cramahe Found census records for Cramahe for James Senior and James Junior for the years
of 1802 to 1811 do not know if same James Henderson yet, but his daughter Rachel Henderson Ward moved there in about 1796 and also was a residence during that time.
If you have developed any other info on this subject please let me know
Also another note I find interesting is that David Giffin lived in the same town of Oswegatchie, St Lawrence County, NY as David Jones a family friend of James Henderson and brother in law to James son Rufus C. Henderson who married Ann Jones daughter of David Jones brother Soloman who lived in Prescott and Augusta Township Canada across the river
Hope you reply
Thanks
Ron Hinson
rkhinson@centurylink.net