Rob Roy (1671-1734), notorious Scotch freebooter, was the son of Donald McGregor of Glengyle, his mother being a Campbell. The Scotch Parliament had, in 1662, outlawed the McGregors and Rob Roy adopted the name of Campbell. He became a cattle-trader, and when the Pretender went into the field in 1715 joined his forces. At the close of the rebellion, the Duke of Montrose, with whom he had come into collision, confiscated his lands, and henceforward Rob Roy avenged himself as best he could by raiding. Scott's well-know.n novel of Rob Roy perpetuates the traditions surrounding the name.