Charles Randolph Mark Ogilvie-Grant (15 March 1905 – 13 February 1969) was a British diplomat and a botanist[1] and one of the earliest members of the Bright Young Things.
He then moved to Trinity College, Oxford,[3] where he was part of a group including Harold Acton, Robert Byron, Henry Vincent Yorke, Henry Thynne, 6th Marquess of Bath, David Plunket Greene, Brian Howard, John Sutro, Hugh Lygon, Bryan Guinness, 2nd Baron Moyne, Patrick Balfour, 3rd Baron Kinross.
[6] Together with Harold Acton, William Howard, 8th Earl of Wicklow, Hugh Lygon, and Robert Byron, Ogilvie-Grant was part of the "Oxford Set" that attended the Hypocrites' Club.
[16] In 1933 Patrick Leigh Fermor walked by foot from London to Constantinople, he carried with him Ogilvie-Grant's rucksack that he used when, with David Talbot Rice and Robert Byron, they went on a trip to Mt.
"[17] Mark Ogilvie-Grant was also a botanist and in 1940 he contributed an essay, Plants and Western Crete to New Flora and Silva by Evan Hillhouse Methven Cox.
[19] During World War II, Mark Ogilvie-Grant was a Captain in the Scots Guards and was recruited by Brigadier Dudley Clarke to be part of the "A" Force, a deception department set up in Cairo in March 1941.
[3] In 1959 John Murray distributed in Great Britain, Helani Vlachos's book Mosaic, translated into English by Mark Ogilvie-Grant.