My research is on the Murphy family of Hunter Tim Murphy.There is a book out on him titled The Rifleman, The Life of Hunter Tim Murphy by John Brick.
It seems that at least some of the elements of this Murphy family were involved with the raid at Harpers Ferry.Raider John E Cooke married Mary Virginia Kennedy who was the daughter of Writer John Pendleton Kennedy.They lived on the Murphy Farm in Harpers Ferry. The Murphys were associated with Lewis Washington.
John Pendleton Kennedy was friends with William Wirt who was the lawyer for Thomas Jefferson at the time of the Lewis and Clark Expedition.
Raider John E Cooke's brother-in-law was Indiana Gov A.P. Willard and associate of General Lew Wallace.
A DNA test was done on the Cooke family sometimes spelled Cook and the results connect to Pitcairn PA and Captain James Cook and his Voyage of Discovery to the South Pacific to view the Transit of Venus. The Cook/Cookes were known to make Survey Equipment.
The story of Hunter Tim Murphy was that he was a War Hero at the Battle of Saratoga under General Daniel Morgan and somehow the Murphys tied themselves to the Washingtons of Lewis Washington of Harpers Ferry.
Although this is not a test of this Murphy line.But with a test of another family known to associate with this Murphy line, one gets an idea where this Murphy line might connect back in Ireland.
The Myers family of Hunter John Myers were also Surveyors for George Washington.You can read about him in the book The Life of Hunter John Myers by John Esten Cooke.