Robert Roy MacGregor, usually known simply as Rob Roy, was a Scottish folk hero and outlaw of the 18th century.
MacGregor was born at Glengyle, at the head of Loch Katrine on 7 March 1671, as proved by an extract from the Register of Baptisms of Buchanan Parish. His father was Donald MacGregor, his mother Margaret Campbell. He married Mary Helen MacGregor of Comar, born at Leny Farm, Strathyre. They were married in Glenarklet in January 1693. Later they had four sons: James, known as Mor, or Tall; Ranald; Coll; Robert, known as Robin Oig, or Young Rob. A cousin Duncan was later adopted.
Rob Roy is anglicised from the Gaelic Raibert Ruadh, or Red Robert because he had red hair, which darkened to auburn in later life.
He was a Highland freebooter known as the Scottish Robin Hood. Nominally a cattle dealer, he became a cattle thief who sold his neighbors protection against other rustlers. When the protection business failed, Rob Roy was accused of fraud and declared an outlaw. After his principal creditor, James Graham, First Duke of Montrose, seized his lands, Rob Roy warred with the duke until 1722, when Rob Roy was forced to surrender. Later imprisoned, he was finally pardoned in 1727. He died in his house at Inverlochlarig Beg, Balquhidder, on 28 December 1734.
The legend of Robert Roy MacGregor was the inspiration for the novel Rob Roy by Sir Walter Scott. Adaptations of his story have also been told in film, most notably Rob Roy, starring Liam Neeson in the title role.