Diana Middleton

In the short story The Adventure of the Christmas Pudding, Diana Middleton was a guest at the Christmas house party at Kings Lacey together with Hercule Poirot. Diana was a family friend of the Laceys. She was only twenty two but already a widow. Mrs Emmeline Lacey hoped to matchmake her with another family friend David Welwyn.

Diana Middleton was not featured in the film adaptation of the story in Series 3 of ITV's Agatha Christie's Poirot.