4th gr grandfather, James Long, born 1738, Lancaster Co., Pa. Believe his father was James or John Long. One history states James is Irish another Scotch Irish. He spent first fifty years Carlisle/Shippensburg Pa & Frederick Md.area. Last forty Crawford Co. Pa. near another documented Irishman. Brother was Col. Cookson Long Revolutionary War.
DNA for myself and one cousin indicate we have Irish roots.
Looking for possible leads as to which Long came from Ireland and when.