
By an act of the New York State Legislature on March 28, 1805, Lewis and Jefferson Counties were created, being sectioned off from Oneida County of which they had both been a part. The name Lewis was chosen in honor of Morgan Lewis, a son of Francis Lewis (who was among the New York signers of the Declaration of Independence). Morgan Lewis had actively served in Washington’s army throughout the war, assigned at different times to General Gates and Clinton. At the time Lewis County was formed, Morgan Lewis was then serving as Governor of New York State.
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