Clayton was a founder of the Pennsylvania colony, serving as an original commissioner for
William Penn, as well as one of Philadelphia's first judges. He was appointed to the provincial Council in 3 Aug 1681, and later was elected to the council in 1683, serving until 30 Mar 1686. On 19 Aug 1684, he was commissioned as a JP in Philadelphia County.
Penn Company Commissioner In 1677, Clayton set sail for America, arriving in New York after being selected by Penn to serve as a commissioner. He oversaw the clearance of Indian land titles acquired by Penn in the
West Jersey colony near present day
Burlington, New Jersey. In 1678, he purchased 1000 acres in
Marcus Hook, Pennsylvania. In 1681, his family removed to
Chichester, Pennsylvania, where Clayton had secured a 500-acre land patent.
Chester and Philadelphia judge In 1681, he presided over the first
Upland Court in
Chester, Pennsylvania and eventually was one of the first judges of nearby Philadelphia. ==Notable American relations==