Along with many
Highland clansmen, at the age of eighteen Rob Roy MacGregor together with his father joined the
Jacobite rising of 1689 led by
John Graham, 1st Viscount Dundee, and
Sir Ewen Cameron of Lochiel, to support the
Stuart King James VII, whose flight from Britain following the
Glorious Revolution of 1688 had been declared by the English
Convention Parliament to be an abdication, then
in Scotland the
Convention of Estates adopted the
Claim of Right and declared that James had forfeited the Scottish throne. Although victorious in initial battles, Dundee was killed at the
Battle of Killiecrankie in 1689, deflating the rising which then lost the
Battle of Dunkeld. Rob Roy's father was taken to jail, where he was held on
high treason charges for two years. Rob Roy's mother Margaret's health failed during Donald's time in prison. By the time Donald was finally released, his wife was dead. Like many other
Scottish clan chiefs during the 17th and 18th centuries, Rob Roy operated an extralegal
Watch over the cattle herds of the
Lowland gentry in return for
black mail (protection money), which was used to feed the families of his tenants and clansmen. Any cattle that were stolen from herds under his Watch were either retrieved or paid for in full. Rob Roy became a respected cattleman – this was a time when
cattle raiding and protection rackets, selling protection against theft, were commonplace means of earning a living. MacGregor borrowed a large sum to increase his own cattle herd, but owing to the disappearance of his chief herder, who was entrusted with the money, MacGregor defaulted on his loan. (Gaelic: ),
Loch Katrine, where Rob Roy once imprisoned the
Duke's factor. His principal creditor,
James Graham, 1st Duke of Montrose, then seized his lands. In a letter later circulated on his behalf and widely believed at the time, Rob Roy alleged that Montrose had twice offered to forgive his debts in return for
perjured testimony that would help to
frame John Campbell, 2nd Duke of Argyll for both
high treason and
Jacobitism. Rob Roy further claimed that when he indignantly refused, he was branded an
outlaw, and his wife and family were evicted from their house at
Inversnaid, which was then burned down. Rob Roy made also similar allegations against
John Murray, 1st Duke of Atholl, which he also indignantly refused. In retaliation, Rob Roy waged a private blood feud against Montrose, both raiding his cattle and robbing his rents. Another version states that Rob Roy's estates of Craigrostan and Ardess were forfeited for his part in the
Jacobite rising of 1715. The Duke of Montrose then acquired the property in 1720 by open purchase from the Commissioners of Enquiry. ==Glen Shira==