Major Dumbarton appears in the story, The Baker's Dozen. A widower, Dumbarton proposes to a woman by the name of Mrs. Emily Carewe. Dumbarton's only worry about the proposal is that the couple has thirteen children between them..... which he considers an unlucky number. He is, however, relieved to discover that he has counted one of his own children twice, thus, they have a baker's dozen.
The Penguin Complete Saki