Samuel Porterfield Sr. migrated from Ireland to United States.
private Samuel Porterfield Sr. served in the Cumberland County Militia during the American Revolution Service started: Unit(s): Service ended:
Samuel Porterfield was born in 1726 in County Donegal, Ireland. He came to America with his parents and 7 siblings around 1730. The family initially lived in Chester County, Pennsylvania. Samuel moved to Lancaster County and eventually settled in Cumberland County. He passed away in 1789. 
Samuel served as a private in the Revolutionary War in the Cumberland County Militia. He served under Captain Robert Shannon. 
Tax records of 1779 and 1785 have Samuel in Cumberland, Pennsylvania.
And index of a land warrant in Cumberland from 1784 exists.
Land Warrants of 224 acres place Samuel in Cumberland County, Pennsylvania in 1788.
He died in 1789 and was buried at Atkinson Mills Methodist Cemetery in Atkinson Mills, Pennsylvania.
Samuel is one of six Porterfields recognized as a DAR Patriot. His son Samuel Porterfield is also listed as a DAR patriot.
There are two separate Samuel Porterfields mentioned in the Pennsylvania Archives Muster Rolls. This one served under Colonel James Dunlap. Samuel's son William married Mary Shannon, daughter of Robert Shannon. The other Samuel, listed as a horseman, is Samuel's son.
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It may be possible to confirm family relationships with Samuel by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree: