His first name was the surname of his mother, daughter of the Rev. and Hon. Arthur Philip Perceval, through whom he was collaterally related to Spencer Perceval. His own family of Landon was of French Huguenot descent, having migrated to London in the 1680s at the time of the revocation of the Edict of Nantes.
Perceval Landon was born in 1868 and educated at Hertford College, Oxford. While at Oxford, he was one of the original subscribers to Woodward’s Treatise on Heraldry British and Foreign (1892), and he had a lifelong interest in heraldry.
He was called to the Bar by the Inner Temple but in 1899—1900 he was War Correspondent to The Times during the South African War. He was also involved, with his close and lifelong friend Rudyard Kipling and others, in a daily paper called The Friend started by Lord Roberts in Bloemfontein during the Boer War. This South African experience launched a career of world travel, journalism, and other writing, so that he described himself in Who's Who as "special correspondent, dramatist, and author".
Landon was private secretary to the Governor of New South Wales 1900; in 1903 he was special correspondent of the Daily Mail at the Delhi Durbar, in China, in Japan and in Siberia; in 1903—1904 he was special correspondent of The Times on the British military expedition to Lhasa, Tibet; in 1905—1906 he was special correspondent of The Times for the Prince of Wales' visit to India; and after that he was in Persia, India, and Nepal, 1908; Russian Turkestan 1909; Egypt and Sudan 1910; on the North Eastern Frontier of India and at the Delhi Durbar, 1911; in Mesopotamiaand Syria, 1912; in Scandinavia and behind the British and French lines in 1914-1915; behind the Italian lines and to the Vatican in 1917 (the war and Vatican visits with Kipling); at the Paris Peace Conference, 1919; in Constantinople, 1920; in India, Mesopotamia, Syria, and Palestine 1921; on the Prince of Wales' tour of India and Japan, 1921-1922; in China and North America 1922; at the Peace Conference in Lausanne, 1923; in China, Nepal and Egypt 1924; and in China in 1925 (source except where noted: Who Was Who).
By this time, Landon was 57 and had traveled constantly since the age of 21. He died unmarried on 23 January 1927.
Landon's ghost story Thurnley Abbey was originally published in 1908 in his book Raw Edges. It is reprinted in many modern anthologies, including The 2nd Fontana Book of Great Ghost Stories, The Penguin Book of Horror Stories and The Dark Horse Book of Hauntings.
The story is now in the public domain and may be read here or, in pdf format, here.
