‘The Luncheon’ is a short story written by -

William Somerset Maugham(1874 – 1935): English novelist, playwright and story writer.
Works:
Novels: Of Human Bondage, The Sacred Flames, The Razor’s Edge, Cakes and Ale, the Magician, The Moon and Sixpence, Lady Frederick.
Play: The Land of Promise.
Short Stories: The Ant and the Grasshopper, The Luncheon.
[Source: Britannica]