Final answer:
Dorothy Sayers created the character Lord Peter Wimsey, a nobleman detective in her series of interwar British detective stories.
Step-by-step explanation:
The character that Dorothy Sayers is known for in her detective stories is Lord Peter Wimsey.
Sayers' works are a series of novels and short stories set in the United Kingdom between the First and Second World Wars. Lord Peter Wimsey is a nobleman detective who solves crimes with intelligence, wit, and social grace.
Despite his lighthearted personality, he often deals with the grim business of tracking down murderers. Sayers' writing is notable for its depth of characterization and the intricate plotting of the detective genre.