Yorkshire County, Maine Genealogy
Yorkshire County, Massachusetts (now Maine) was the new name given to the former Cornwall County, New York in 1692 at the time it was last transferred from New York to the Dominion of New England and then to Massachusetts. 
The lands of Yorkshire County lay between the Kennebec River and the St. Croix River and stretched from the Atlantic Ocean on the southeast to the border of Quebec on the northwest side. Eventually the land of the old Yorkshire County became the greater part of the present-day state of Maine when it was separated from Massachusetts in 1820. Also, the name of Yorkshire was eventually shortened to York County.
For information about residents of Yorkshire County after 1692 (now in Maine), try searching records of:
- New England Historic Genealogical Society
- Maine State Archives
- York County, Maine
- county records of the present-day Maine county which now includes the former Yorkshire County land where an ancestor lived after 1692.
- Wikipedia contributors, "Cornwall County, Province of New York" in Wikipedia: the Free Encyclopedia at http://en.wikipedia.org/wiki/Cornwall_County,_Province_of_New_York (accessed 28 June 2012).
- Wikipedia contributors, "York County, Massachusetts" in Wikipedia: the Free Encyclopedia at http://en.wikipedia.org/wiki/York_County,_Massachusetts (accessed 28 June 2012).