Westsylvania

Westsylvania was a proposed state of the United States located primarily in what is now West Virginia, southwestern Pennsylvania, and small parts of Kentucky, Maryland, and Virginia. First proposed early in the American Revolution, Westsylvania would have been the fourteenth state in the newly formed United States, had it been recognized.

In the years before the American Revolutionary War (1775–1783), jurisdiction of the region west of the Allegheny Mountains around Pittsburgh and along the Ohio River had been disputed between the British colonies of Virginia and Pennsylvania. The Mason-Dixon line, which officially established the border between Pennsylvania and Maryland, would have also settled the Virginia-Pennsylvania boundary dispute, but the surveying of the final miles of the Mason-Dixon line was abandoned in 1767 and would not be completed until 1784. In the early 1770s it was therefore unclear whether Pittsburgh and environs were in Pennsylvania or Virginia. Both colonies proceeded as if they had the better claim to the area. Virginia administered the region as the District of West Augusta, while in Pennsylvania it was considered a part of Westmoreland County.

Complicating this border dispute were the vast land claims of the Ohio Company of Virginia and the Indiana Land Company along the Ohio River. The two companies combined forces in 1769 to create the Grand Ohio Company with the intention of creating a colony known as Vandalia, which would have had similar borders to Westsylvania had it been recognized. The outbreak of the American Revolutionary War effectively brought an end to the efforts to establish Vandalia.

...
Wikipedia