name taken from 1718 by French author François Marie Arouet after his imprisonment in the Bastille on suspicion of having written some satirical verses; originally de Voltaire. The signification is uncertain.
1775, "of or pertaining to the writings or style of 16c. French author François Rabelais," whose writings "are distinguished by exuberance of imagination and language combined with extravagance and coarseness of humor and satire." [OED]
1968, "in a hierarchy, every employee tends to rise to his level of incompetence," named for (and by) Laurence Johnston Peter (1919-1990) Canadian-born U.S. educationalist and author, who described it in his book of the same name (1969).
also Walter Mitty, in reference to an adventurous daydreamer, by 1950, from title character in "The Secret Life of Walter Mitty," short story by U.S. author James Thurber (1894-1961) first published in the New Yorker March 18, 1939.