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All of the Province of Pennsylvania was granted by Charles II of England to William Penn.

In 1682,William Penn began a settlement in his Province at Philadelphia.Philadelphia, Bucks, and Chester Counties were
formed by William Penn when the Province was formed in 1682. Next, was Lancaster County in 1729, York County in 1749, Cumberland County in 1750,and Bedford County, out of the western part of Cumberland, in 1772.

A new county had to be erected by an Act of Assembly and on February 26, 1773, the Assembly passed the act organizing a new county--Westmoreland from Bedford County.  The new county was named Westmoreland,
after the county of the same name in England. The original Westmoreland County included all the territory of Westmoreland, Washington, Fayette, Greene, Allegheny, Butler, Beaver, Crawford, Erie, Mercer, and Lawrence, and part of the counties of Indiana, Armstrong, Venango, and Warren.

Westmoreland County Neighbors:

• Allegheny ~ Washington ~ Fayette ~ Somerset ~ Cambria ~ Indiana ~ Armstrong ~ Butler