Philip Marlowe ( MAR-loh) is a fictional character created by Raymond Chandler who was characteristic of the hardboiled crime fiction genre. The genre originated in the 1920s, notably in Black Mask magazine, in which Dashiell Hammett's The Continental Op and Sam Spade first appeared. Marlowe first appeared under that name in The Big Sleep, published in 1939. Chandler's early short stories, published in pulp magazines such as Black Mask and Dime Detective, featured similar characters with names like "Carmady" and "John Dalmas", starting in 1933.
https://en.wikipedia.org/wiki/Philip_Marlowe