One of the most famous of clans, the MacGregors claim royal descent from Grigor, son of King Alpin, who flourished in the 8th century. They possessed Glenorchy, Glenlyon, Glenstrae and other lands in Perth and Argyll. They held their lands by right of the sword and were ferocious and warlike. As a result of their lawlessness their name and part of their lands were proscribed. The MacGregor chief supported Prince Charlie and fought at the Battle of Culloden in 1746. It was not until 1775 that the proscription on their name was removed. Rob Roy, the famous "outlaw", was a son of Lt.-Col. MacGregor of Glengyle.