Lewis County, New York: History
The area now occupied by Lewis County was very sparsely occupied until the end of the 18th century. Although the land was already claimed by the Province of New York in its original grant, the land was clearly part of the territory of the Iroquois confederacy until after the American Revolutionary War, when New York seized the lands from tribes that had supported the British. The lands were unsurveyed and remained unattractive to settlement until after the complex process of Macomb's Purchase of 1791 eventually put much of the land in the hands of John Brown.
The area now falling in the jurisdiction of Lewis County, New York, has changed jurisdiction many times, beginning as part of the originally enormous Albany County in 1683, then, after one of the many times that Albany County was divided, becoming part of Tryon County in 1772, which was renamed to Montgomery County in 1784; next, present-day Lewis County was part of Herkimer County in 1791, then part of Oneida County in 1798, and finally assumed its current name and borders in 1805.
When counties were established in New York State in 1683, the present Lewis County was part of Albany County. This was an enormous county, including the northern part of New York State as well as all of the present State of Vermont and, in theory, extending westward to the Pacific Ocean. This county was reduced in size on July 3, 1766, by the creation of Cumberland County, and further on March 16, 1770, by the creation of Gloucester County, both containing territory now in Vermont.
On March 12, 1772, what was left of Albany County was split into three parts, one remaining under the name Albany County. One of the other pieces, Tryon County, contained the western portion (and thus, since no western boundary was specified, theoretically still extended west to the Pacific). The eastern boundary of Tryon County was approximately five miles west of the present city of Schenectady, and the county included the western part of the Adirondack Mountains and the area west of the West Branch of the Delaware River. The area then designated as Tryon County now includes 37 counties of New York State. The county was named for William Tryon, colonial governor of New York.
In the years prior to 1776, most of the Loyalists in Tryon County fled to Canada. In 1784, following the peace treaty that ended the American Revolutionary War, the name of Tryon County was changed to Montgomery County to honor the general, Richard Montgomery, who had captured several places in Canada and died attempting to capture the city of Quebec, replacing the name of the despised British governor.
In 1789, the size of Montgomery County was reduced by the splitting off of Ontario County from Montgomery. The actual area split off from Montgomery County was much larger than the present county, also including the present Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston, Monroe, Niagara, Orleans, Steuben, Wyoming, Yates, and part of Schuyler and Wayne Counties.
In 1791, Herkimer County was one of three counties split off from Montgomery (the other two being Otsego, and Tioga County). This was much larger than the present county, however, and was reduced by a number of subsequent splits. The first one of these, in 1794, produced Onondaga County. …