Rob Roy became a well-known and respected cattleman — this was a time when cattle were considered common property, taking someone's cattle was not illegal, and selling protection against theft (blackmail) was an honest means of earning a living. His life as an outlaw started when he was unable to repay money that he had borrowed form the Duke of Montrose to fund his growing cattle trade. Rob Roy borrowed a large sum of money to increase his own cattle herd, but due to the deception of his chief herder, who was entrusted with the money to bring the cattle back, Rob Roy lost his money and cattle, and defaulted on his loan. As a result, he was branded an outlaw, and his wife and family were evicted from their house at Inversnaid, which was then burned down. After his principal creditor, James Graham, 1st Duke of Montrose seized his lands and property and Rob Roy fled with his debt unpaid.From this time onwards Rob Roy and the followers he had gathered, at one time as many as 500 men, profited from raiding lands of the Duke and those of his neighbours. Though he relieved many of their property it is said that he was never brutal or cruel with his victims and never stole from the common man, there was after all no profit from robbing a poor man. Montrose captured Rob Roy but he made a famous escape, with the aid of a friend in the employ of the Duke at the ford in the river near Balquidder. 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.

Rob Roy MacGregor (1671
- 1734)