Person:Lewis Walker (3), a Welsh Quaker, settled in the Chester Valley, near Radnor, Chester County, about 1692 His descendants are detailed in Source:Streets, 1896. As of October 2009 no YDNA results have been reported for this lineage. Lewis married Mary Morris soon after arrival in the new world. Streets suggested they met aboard ship. In any case the couple initially settled at Radnor outside of Philadelphia. Lewis would later acquire land in the "Chester Valley".
Lewis and Mary would have five sons (Daniel, Joseph, Enoch, Able, and Isaac), and two daughters, (Elizabeth and Hannah). The majority of his children and grandchildren remained in the general Radnor-Chester Valley area. His property in Chester Valley property passed in part to his eldest son Daniel, and youngest son Isaac. Here Daniel established a forge, which became known as "The Valley Forge". George Washington's Continental Army would enter winter quarters here in 1777-1778.
About 1747 Able would relocate with his family to Winchester Virginia. One of Able's son's (Isaac) is said to have moved to North Carolina, but where exactly has not been determined. 
Some of the children of Isaac, son of Lewis, moved to York County, PA shortly before the Revolution.
A listing of Walkers in Chester County based on 1730 tax records, with a best guess about relationships to known family lines
A point of some interest is the fact that in the first three generations of the Chester Valley Walkers, as given by Streets, 1896, the given name "John" appears not a single time. In addition, there is a decided preference for old testament names such as Daniel, Enoch, Able, and Isaac. This follows a common Quaker naming way, and may serve to help separate persons in this lineage, from those of others, especially in the Scot Irish lines where "John" is a common given name.