Debrett is a genealogical guide to the family lines of the British aristocracy. Debrett refers to the publisher, John Debrett (1753-1822), whose first guide appeared in 1769.
Debrett is mentioned in Vanity Fair (1847-1848) by William Makepeace Thackeray (1811-1863), The Picture of Dorian Gray (1890) by Oscar Wilde (1854-1900), and Burmese Days (1934) by George Orwell (1903-1950). It also appears in the novels of both E.F. Benson (1867-1940) and P.G. Wodehouse (1881-1975).
The chief rival publication of Debrett is Burke’s Peerage, Baronetage & Knightage, published since 1826.