Brigadier Sir Gregor MacGregor, 6th Baronet (22 December 1925 – 30 March 2003) was a British Army officer and Scottish clan chief.
He was promoted to lieutenant colonel on 14 April 1966[6] and was made commanding officer of the 1st Battalion, Scots Guards in 1966, a position he held until 1969.
[10] His oldest son married television journalist Lord Lieutenant of Dumfries Fiona Armstrong.
In 2011 the British mercenary and former Scots Guard and SAS officer, Simon Mann upset members of Clan Gregor and MacGregor's family after publishing his autobiography in which he describes MacGregor as a "small, toxic, red-haired, farting, foul-mouthed, stentorian dragon".
The book, Cry Havoc, contains Mann's account of his unsuccessful mission to overthrow Teodoro Obiang Nguema Mbasogo, the President of Equatorial Guinea.